IChat AV no workie on new MacBook

Question

I just purchased a MacBook so that I could iChat AV w/ greater freedom than my iBook w/ an iSight. Well, it doesn't work. I keep getting error message #8 saying that "[insert my name here] failed to respond" It works on my iBook w/ iSight.
I'm also running a Linksys WRT 54G v2 router w/ the latest firmware (4.30.05 I think) and WEP security.
Here's all I've done.
The iBook is set up w/ a firewall and TCP port 5190 enabled.
The MB didn't work w/o the firewall.
...w/ the firewall and TCP port 5190
...w/ the firewall and the slew of TCP and UDP ports mentioned in the Apple KB
...w/ the firewall, slew of ports, and all ports forwarded and triggered on the router
On the iBook I've AV'd w/ another MacBook, an iMac 800Mhz G4, and those 3 Apple iChat AV test buddies.
On the MacBook, squanto.
WTFO
Please help, this is extraordinarily frustrating. I want to like Apple, then they pull crap like this. Macs're s'posed to be easy, not a nut roll.

Answer 1

Hmmm. Sounds like you have an identical seetings on both machines.. yes?
Are you trying to iChatAV between the iBook and MB at the same time? If you forward the ports to one or the other Mac, this might not work since the forwarded ports would then be dedicated to the initiating Mac.
.. try port 443 on iChat on the MB.
.. also restart iChat to clear the cache.