Hi Rob,
Can you answer some of the questions raised in this thread ?
Has the iChat Details ever been used in a Second Mac User Account that has had Parental Controls Active for iChat ?
In the iChat Preferences > Accounts > Security what option are you using ?
Have you used a Site anywhere that can list your Buddy list and have you Logged specifically out of that page ?
AIM Express on a Phone or other computer ?
Tokbox ?
It will be my tomorrow before I get to any reply.
10:53 PM Wednesday; January 13, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"