Connection drops dead during session (OS 10.5.6 problem?)

I am chatting without trouble for quite a long time now, till now. During sessions the connection drops dead after a minute or 3. Buddy freezes in the chatwindow and his/her little cam in the chatlist gets gray. Problem repeats itself with several buddy's. Typing a message to the buddy results in an AOL server time-out message. Restarting I-Chat brings the buddy to life again, connection is made swiftly and after a miute or 2-3 the line drops dead again. The only thing recently changed on my system is the software update to 10.5.6. Could it be a bug in this update? Any other experiences regarding 10.5.6 and I-Chat?
Kind regards, Julius

Only if you have Perian (1.1.3)
Downdgrading Perian only fixes Perian.
Defcom says Use Quicktime at 1.5Mbps. I would concur.
He also says try the port at 443. (I would go as far as saying try it with and Without th SSL Login as well
I would also consider deleting com.apple.ichat.AIM.plist and restarting iChat.
I would also consider Rebooting the Modem to clear any odd ports being held onto.
8:16 PM Wednesday; January 21, 2009
Message was edited by: Ralph Johns (UK)

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    CRC Errors (Down/Up)
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