I use exchange server 2007 under HTC mail, plus gmail via the Google mail app. Several of my favorite/speed dial entries have been randomly deleted over the last few weeks.
I finally tracked down the issue -- Skype! Once I deleted Skype the random deletions have stopped. I thought that it could be related to HTC mail trying to link Google contacts with exchange contacts, but based on my experience since I removed Skype I am pretty sure it is Skype.
Not sure why this just happened to contacts in Speed Dial or Favorites, but if you have been having this problem try uninstalling Skype. Good luck.
I finally tracked down the issue -- Skype! Once I deleted Skype the random deletions have stopped. I thought that it could be related to HTC mail trying to link Google contacts with exchange contacts, but based on my experience since I removed Skype I am pretty sure it is Skype.
Not sure why this just happened to contacts in Speed Dial or Favorites, but if you have been having this problem try uninstalling Skype. Good luck.