Help Syncing Exchange / date & time problems

[adwarner]

Hi all,
Apologies if this is in the wrong thread, it's my first post. Not sure if this is a Desire Problem, or an Android problem or a 3 network issue, but...

Yesterday my 20-month old Desire just stopped syncing my Exchange ActivSync email saying it couldn't connect to server.

This morning, I took the battery out and re-inserted it as the phone 'crashed'. Now the date and time and wrong and won't update automatically.

Any ideas? Still branded etc., made no changes.

Thanks for any help
Adrian