I have an IPAQ H1940 and i face the following problem :

Activesyncs does conect but fails to actually sync any files. The 'add/remove programs' feature always gets stuck to 0% and i can't install any program to the pocket pc. It only creates a 0bytes size cab file for each installation attempt.
I have tried hard resting the pocketpc , uninstalling/reinstalling activesync 3.8 and 'detect and repair' in microsoft outlook.I've allowed all access for activesync through zonealarm. Nothing helps. The ipaq does sync flawlessly with other pcs i've tried, but has problem doing so on mine.

Any ideas?