-- I could reproduce this bug on 3.5 branch as well.

-- Details : https://www.intevation.de/roundup/kolab/issue2607

Merged revisions 830100 via svnmerge from 
svn+ssh://pradeepto@svn.kde.org/home/kde/branches/kdepim/enterprise/kdepim

........
  r830100 | pradeepto | 2008-07-10 00:29:32 +0530 (Thu, 10 Jul 2008) | 4 lines
  
   -- kolab/issue2607 sync loop after deactivation of autosync.
        -- Check if the mail-check-interval changed to 0 / was disabled by the user and if yes, de-install the timer so that it doesn't trigger off
   and start a sync again and again.
........

svn path=/branches/KDE/3.5/kdepim/; revision=830307

accountmanager.cpp

@@ -113,6 +113,12 @@ void AccountManager::singleCheckMail(KMAccount *account, bool interactive)
   mNewMailArrived = false;
   mInteractive = interactive;
 
+ // if sync has been requested by the user then check if check-interval was disabled by user, if yes, then 
+ // de-install the timer
+ // Safe guard against an infinite sync loop (kolab/issue2607)
+  if ( mInteractive ) 
+      account->readTimerConfig();
+
   // queue the account
   mAcctTodo.append(account);
 

kmaccount.cpp

@@ -163,6 +163,16 @@ void KMAccount::readConfig(KConfig& config)
     installTimer();
 }
 
+void KMAccount::readTimerConfig()
+{
+  // Re-reads and checks check-interval value and deinstalls timer incase check-interval
+  // for mail check is disabled.
+  // Or else, the mail sync goes into a infinite loop (kolab/issue2607)
+  if (mInterval == 0)
+    deinstallTimer();
+  else
+    installTimer();
+}
 
 //-----------------------------------------------------------------------------
 void KMAccount::writeConfig(KConfig& config)

kmaccount.h

@@ -142,6 +142,7 @@ public:
    * already properly set by the caller.
    */
   virtual void readConfig(KConfig& config);
+  virtual void readTimerConfig();
 
   /**
    * Write all account information to given config file. The config group