The solution. From the QuickScript window enter the following line.
user.im.prefs.flConnectAtStartup = false
Now from the Radio > Outliner > Preferences menu. Select Instant Messaging Notification. Uncheck all the boxes. Something in the Notification via IM doesn’t work. I think it has to do with the jabber code and I haven’t tested the AIM code.
Hopefully Jake will make some changes to this pref page so that when the first box is unchecked it will make user.im.prefs.flConnectAtStartup = false.