Ichat aim connection problems

Question

I can connect to my dad in the UK on his PC from my mac.
I can hear him, but his frame rate is around 1fps - really slow, his bit rate at 20 bits ps (he's on broadband) My connection Doctor shows my fps at 20fps and my bitrate at 200+. He can hear me sometimes but he says i break up alot and says my picture is really bad.
He is running XP pro with a Toucam Phillips pro using AIM. He has Nortons security internet firewall. He has been to a page which is supposed to of sorted the firewall issue which someone mentioned on a previous post.
Can anybody help?

Answer 1

Since updating to Tiger I've been unable to make an audio iChat connection. It merely says "insufficient bandwidth" which of course is completely bogus. My bandwidth speed has not changed and was totaly sufficient before. The only thing that changed was upgrading to Tiger.
So, after reading every post on this topic I can find and doing every suggestion that Apple has made, it still does not work.
First, I upgraded from 10.4.1 to 10.4.2: doesn't work. Then I set the long list of ports in the TCP and UDP Sharing settings: doesn't work. Then I deleted the iChat .plist files: doesn't work.
The most recent post I've found now claims that some routers do not support iChat features. Well, my router (a Linksys WRT54G) supported iChat under 10.3 just fine and nothing in my router has changed since then. So now I am waiting for a new router to arrive. Will iChat decide to work then? I have no reason to be hopeful.
What really irks me the most about all of this (not counting the days I've spent jumping through one hoop after another) is that Apple can't simply admit they broke a perfectly working product and are now trying to shove the blame off on non-supported (read non-Apple) routers.
Has Bill Gates taken over Apple? This is the exactly kind of "update" I'd expect from Redmond.