IPhone crashes every time while doing his backup, can´t sync regulary

Question

Every time I try to sync my iPhone with iTunes, the iPhone crashes 1 minute after putting the iPhone into the dock and started the sync process. After the crash, the iPhone icon disappears in the device list and appears again after a few seconds. Then I have to unlock the iPhone again.
The only way to get content on the phone is to delete everything off the phone (unmark addressbook, calender, bookmarks, all music, all podcasts, all videos), do a sync to delete the whole content, then do a second sync, this time with the marked lists. So it´s not a sync, it´s only a one way data transfer to the iPhone.
It´s horrible because it takes a long time to get all movies on the phone every time from the very beginning and it´s not the way I would like to use the phone.
I did complete new installation with resetting the iPhone and a complete fresh installation of OS 1.1.2, nothing has changed.
What can I do?
best regards

Answer 1

It sounds like you might have tried this already, but I'd first turn off automatic syncing with your phone and then just try syncing video. And then try syncing calendar. And then try music, etc.
Some folks have reported issues with their mail sync and in this particular case I'd suspect that as a culprit, so I'd leave that sync off until the very end. If it turns out to be the case then you just need to reconfigure your mail properly. But first you need to determine exactly what is happening and only by syncing one category at a time can you figure out where the problem is lurking.