I'm a new BB8703e owner. I used PocketMac to sync with my iBook G4. After the sync many of my address groups in Mac's Address Book were scrambled. For example, before the the sync I had 7 address groups:
Friends
Family
Business
Basketball
Aviation
Boating
Music
After the sync I had 12 address groups:
Friends
Friends, Boating
Family
Family, Basketball, Aviation
Business
Business, Music
Basketball, Music, Family
Aviation
Aviation, Boating, Friends
Boating
Music
The contents of the original 7 groups changed following the sync, too.