diff --git a/CampusAppWP8/CampusAppWP8/Feed/Link/ClubLinkFeed.cs b/CampusAppWP8/CampusAppWP8/Feed/Link/ClubLinkFeed.cs
index 76f9d279..7f328f0a 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/Link/ClubLinkFeed.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/Link/ClubLinkFeed.cs
@@ -12,6 +12,7 @@ namespace CampusAppWP8.Feed.Link
     using CampusAppWP8.Model;
     using CampusAppWP8.Model.Link;
     using CampusAppWP8.Resources;
+    using CampusAppWP8.Utility;
 
     /// <summary>
     /// This Class is for ClubLinkFeeds
@@ -26,8 +27,9 @@ namespace CampusAppWP8.Feed.Link
         public ClubLinkFeed()
             : base(ModelType.FileAndFeed, Constants.FileLink_ClubLinks, Constants.UrlLink_ClubLinks)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
-            this.isModelUpToDate += new IsModelUpToDate(this.CheckIsModelUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
+            this.isModelUpToDateOnLoad += new IsModelUpToDate(this.CheckIsModelUpToDate);
         }
 
         #endregion
@@ -58,12 +60,31 @@ namespace CampusAppWP8.Feed.Link
         /// <param name="model">reference of the FeedModel</param>
         /// <param name="fileInfo">info about the file</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(LinkListModel model, FileInfo fileInfo)
+        private bool CheckIsFileUpToDateOnLoad(LinkListModel model, FileInfo fileInfo)
         {
             DateTime lastModified = fileInfo.LastWriteTime;
             return this.CheckIsUpToDate(lastModified);
         }
 
+        /// <summary>
+        /// Method check if the FeedFile is up-to-date
+        /// </summary>
+        /// <param name="model">reference of the FeedModel</param>
+        /// <param name="fileInfo">info about the file</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnSave(LinkListModel model, FileInfo fileInfo)
+        {
+            bool retValue = true;
+
+            if ((fileInfo.Exists == false)
+            || (fileInfo.Length == 0))
+            {
+                retValue = false;
+            }
+
+            return retValue;
+        }
+
         /// <summary>
         /// Check if the model or file is up-to-date.
         /// </summary>
@@ -71,16 +92,7 @@ namespace CampusAppWP8.Feed.Link
         /// <returns>true, if is up-to-date, otherwise false</returns>
         private bool CheckIsUpToDate(DateTime lastModified)
         {
-            DateTime temp = lastModified.AddDays(1);
-
-            int diff = temp.CompareTo(DateTime.Now);
-
-            if (diff < 0)
-            {
-                return false;
-            }
-
-            return true;
+            return Utilities.DayDifference(Utilities.DifferenceType.Less, lastModified, 7.0);
         }
 
         #endregion
diff --git a/CampusAppWP8/CampusAppWP8/Feed/Link/CommonLinkFeed.cs b/CampusAppWP8/CampusAppWP8/Feed/Link/CommonLinkFeed.cs
index 35c1db36..2c99598b 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/Link/CommonLinkFeed.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/Link/CommonLinkFeed.cs
@@ -12,6 +12,7 @@ namespace CampusAppWP8.Feed.Link
     using CampusAppWP8.Model;
     using CampusAppWP8.Model.Link;
     using CampusAppWP8.Resources;
+    using CampusAppWP8.Utility;
 
     /// <summary>
     /// This Class is for CommonLinkFeeds
@@ -26,8 +27,9 @@ namespace CampusAppWP8.Feed.Link
         public CommonLinkFeed()
             : base(ModelType.FileAndFeed, Constants.FileLink_CommonLinks, Constants.UrlLink_CommonLinks)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
-            this.isModelUpToDate += new IsModelUpToDate(this.CheckIsModelUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
+            this.isModelUpToDateOnLoad += new IsModelUpToDate(this.CheckIsModelUpToDate);
         }
 
         #endregion
@@ -58,7 +60,26 @@ namespace CampusAppWP8.Feed.Link
         /// <param name="model">reference of the FeedModel</param>
         /// <param name="fileInfo">info about the file</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(LinkListModel model, FileInfo fileInfo)
+        private bool CheckIsFileUpToDateOnSave(LinkListModel model, FileInfo fileInfo)
+        {
+            bool retValue = true;
+
+            if ((fileInfo.Exists == false)
+            || (fileInfo.Length == 0))
+            {
+                retValue = false;
+            }
+
+            return retValue;
+        }
+
+        /// <summary>
+        /// Method check if the FeedFile is up-to-date
+        /// </summary>
+        /// <param name="model">reference of the FeedModel</param>
+        /// <param name="fileInfo">info about the file</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnLoad(LinkListModel model, FileInfo fileInfo)
         {
             DateTime lastModified = fileInfo.LastWriteTime;
             return this.CheckIsUpToDate(lastModified);
@@ -71,16 +92,7 @@ namespace CampusAppWP8.Feed.Link
         /// <returns>true, if is up-to-date, otherwise false</returns>
         private bool CheckIsUpToDate(DateTime lastModified)
         {
-            DateTime temp = lastModified.AddDays(1);
-
-            int diff = temp.CompareTo(DateTime.Now);
-
-            if (diff < 0)
-            {
-                return false;
-            }
-
-            return true;
+            return Utilities.DayDifference(Utilities.DifferenceType.Less, lastModified, 7.0);
         }
 
         #endregion
diff --git a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeed.cs b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeed.cs
index 265d1aca..659f110e 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeed.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeed.cs
@@ -12,6 +12,7 @@ namespace CampusAppWP8.Feed.Mensa
     using CampusAppWP8.Model;
     using CampusAppWP8.Model.Mensa;
     using CampusAppWP8.Resources;
+    using CampusAppWP8.Utility;
 
     /// <summary>
     /// This Class is for MensaFeeds
@@ -26,8 +27,9 @@ namespace CampusAppWP8.Feed.Mensa
         public MensaFeed()
             : base(ModelType.FileAndFeed, Constants.FileMensa_Shedule, Constants.UrlMensa_Week)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
-            this.isModelUpToDate += new IsModelUpToDate(this.CheckIsModelUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
+            this.isModelUpToDateOnLoad += new IsModelUpToDate(this.CheckIsModelUpToDate);
         }
 
         #endregion
@@ -58,12 +60,31 @@ namespace CampusAppWP8.Feed.Mensa
         /// <param name="model">reference of the FeedModel</param>
         /// <param name="fileInfo">info about the file</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(MenuWeekModel model, FileInfo fileInfo)
+        private bool CheckIsFileUpToDateOnLoad(MenuWeekModel model, FileInfo fileInfo)
         {
             DateTime lastModified = fileInfo.LastWriteTime;
             return this.CheckIsUpToDate(lastModified);
         }
 
+        /// <summary>
+        /// Method check if the FeedFile is up-to-date
+        /// </summary>
+        /// <param name="model">reference of the FeedModel</param>
+        /// <param name="fileInfo">info about the file</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnSave(MenuWeekModel model, FileInfo fileInfo)
+        {
+            bool retValue = true;
+
+            if ((fileInfo.Exists == false)
+            || (fileInfo.Length == 0))
+            {
+                retValue = false;
+            }
+
+            return retValue;
+        }
+
         /// <summary>
         /// Method check if the last modification was later as the NewMenuWeekDay
         /// </summary>
@@ -81,6 +102,7 @@ namespace CampusAppWP8.Feed.Mensa
             return true;
         }
 
+
         #endregion
 
         #endregion
diff --git a/CampusAppWP8/CampusAppWP8/Feed/StudentCouncil/StudentCouncilFeed.cs b/CampusAppWP8/CampusAppWP8/Feed/StudentCouncil/StudentCouncilFeed.cs
index a2520fc3..3c8027bf 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/StudentCouncil/StudentCouncilFeed.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/StudentCouncil/StudentCouncilFeed.cs
@@ -12,6 +12,7 @@ namespace CampusAppWP8.Feed.StudentCouncil
     using CampusAppWP8.Model;
     using CampusAppWP8.Model.StudentCouncil;
     using CampusAppWP8.Resources;
+    using CampusAppWP8.Utility;
 
     /// <summary>
     /// This Class is for  StudentCouncilFeed
@@ -26,8 +27,9 @@ namespace CampusAppWP8.Feed.StudentCouncil
         public StudentCouncilFeed()
             : base(ModelType.FileAndFeed, Constants.FileStudentCouncil_StudentCouncils, Constants.UrlStudentCouncil_StudentCouncils)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
-            this.isModelUpToDate += new IsModelUpToDate(this.CheckIsModelUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
+            this.isModelUpToDateOnLoad += new IsModelUpToDate(this.CheckIsModelUpToDate);
         }
 
         #endregion
@@ -58,12 +60,30 @@ namespace CampusAppWP8.Feed.StudentCouncil
         /// <param name="model">reference of the FeedModel</param>
         /// <param name="fileInfo">info about the file</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(StudentCouncilListModel model, FileInfo fileInfo)
+        private bool CheckIsFileUpToDateOnLoad(StudentCouncilListModel model, FileInfo fileInfo)
         {
             DateTime lastModified = fileInfo.LastWriteTime;
             return this.CheckIsUpToDate(lastModified);
         }
 
+        /// <summary>
+        /// Method check if the FeedFile is up-to-date
+        /// </summary>
+        /// <param name="model">reference of the FeedModel</param>
+        /// <param name="fileInfo">info about the file</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnSave(StudentCouncilListModel model, FileInfo fileInfo)
+        {
+            bool retValue = true;
+
+            if ((fileInfo.Exists == false)
+            || (fileInfo.Length == 0))
+            {
+                retValue = false;
+            }
+
+            return retValue;
+        }
         /// <summary>
         /// Check if the model or file is up-to-date.
         /// </summary>
@@ -71,16 +91,7 @@ namespace CampusAppWP8.Feed.StudentCouncil
         /// <returns>true, if is up-to-date, otherwise false</returns>
         private bool CheckIsUpToDate(DateTime lastModified)
         {
-            DateTime temp = lastModified.AddDays(1);
-
-            int diff = temp.CompareTo(DateTime.Now);
-
-            if (diff < 0)
-            {
-                return false;
-            }
-
-            return true;
+            return Utilities.DayDifference(Utilities.DifferenceType.Less, lastModified, 7.0);
         }
 
         #endregion
diff --git a/CampusAppWP8/CampusAppWP8/Pages/Links/LinkPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Links/LinkPage.xaml.cs
index f0ccccaa..e12e313b 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Links/LinkPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Links/LinkPage.xaml.cs
@@ -115,6 +115,7 @@ namespace CampusAppWP8.Pages.Links
             {
                 this.ProgressBar.Visibility = System.Windows.Visibility.Collapsed;
             }
+            this.commonLinkFeed.SaveData();
         }
 
         /// <summary>
@@ -128,6 +129,7 @@ namespace CampusAppWP8.Pages.Links
             {
                 this.ProgressBar.Visibility = System.Windows.Visibility.Collapsed;
             }
+            this.clubLinkFeed.SaveData();
         }
 
         /// <summary>
diff --git a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
index 8b531f1b..a1e18c30 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
@@ -88,6 +88,7 @@ namespace CampusAppWP8.Pages.Mensa
         {
             this.SetupMensaPivot();
             this.ProgressBar.Visibility = System.Windows.Visibility.Collapsed;
+            this.feed.SaveData();
         }
 
         /// <summary>
diff --git a/CampusAppWP8/CampusAppWP8/Pages/Openinghours/OpeninghoursPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Openinghours/OpeninghoursPage.xaml.cs
index 7d484a9b..1be5c5b5 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Openinghours/OpeninghoursPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Openinghours/OpeninghoursPage.xaml.cs
@@ -83,6 +83,7 @@ namespace CampusAppWP8.Pages.Openinghours
         {
             this.SetupInstitutionList();
             this.ProgressBar.Visibility = System.Windows.Visibility.Collapsed;
+            this.feed.SaveData();
         }
 
         /// <summary>
diff --git a/CampusAppWP8/CampusAppWP8/Pages/StudentCouncil/StudentCouncilPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/StudentCouncil/StudentCouncilPage.xaml.cs
index fa36d6a6..9b427ae6 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/StudentCouncil/StudentCouncilPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/StudentCouncil/StudentCouncilPage.xaml.cs
@@ -77,6 +77,7 @@ namespace CampusAppWP8.Pages.StudentCouncil
         {
             this.SetupStudentCouncilPivot();
             this.ProgressBar.Visibility = System.Windows.Visibility.Collapsed;
+            this.feed.SaveData();
         }
 
         /// <summary>