I have a similar problem.
1) Pre 3 say: too many cards opened (I have no cards open).
2) POWER - RESTART
3) Pre 3 want activation (email, password)
4) I do not sure with the password (I may find it, this is no problem)
5) I bypass activation (by pivotce.com)
6) I have all pictures, but no memos, no address (I have backup in Google mail), no calendar things, no tasks
7) How i can BACKUP the pre3 data for the next time???
MAY I START PRE3 WITH ORIGINAL PROFILE (THE PASSWORD I CAN FIND - NO PROBLEM)?
Thank you very much