OK, Chad,
If you have tried all
those suggestions, you may want to update your system info.
You are still showing
Mac OS X (10.4). The very FIRST suggestion there is that you update to 10.4.2 using the Combo Updater.
I am dubious that you need a future update to correct your problem when it is working for the rest of us with 10.4.2. However, I am a pragmatist, so, whatever works is a good thing.
If you have not already tried this, too, because you had iChat AV working previously, I suggest you consider any untried suggestions that apply to your system(s) from the
How Can I get iChat working again? FAQ.
If you have tried
all of them, too, or if they do not help, the LAST suggestion from
Help for iChat AV 3 Problems was that you post as much as possible of the information requested in the the
When do I Post a New iChat Topic ? FAQ.
By my count, the list requests 20 items of information. (You may even find the problem in the process of gathering that info.) Additional info relevant to your problem may allow us to offer some more specific suggestions.
EZ Jim