QuickTime Live Broadcast issues.

After upgrading to 802.11n, I have had a problem watching Live QuickTime broadcasts in both wired and wireless modes. Video / audio drops out constantly and what video I do get, is severely pixelated and is totaly unusable.
I have re-installed my 802.11g unit and the problem goes away. I have never had this problem untill I replaced my AirPort Extreme "g".
I have tried port mapping QuickTime Server with no change.
I have tried everything I can think of with no luck. Am I the only one with this problem? Did I miss a setting somewhere? How is this problem corrected?
Thank you all for your assistance.
MacBook Pro, PowerMac G5   Mac OS X (10.4.9)   3GB / 500k DSL

i have the same problem ... and earlier posts here haven't yielded any solutions. See:
http://discussions.apple.com/thread.jspa?messageID=4535843&#4535843
btw: the same computer works fine at the local Apple Store (which uses the 802.11n Extreme) ... but not with the 802.11n Extreme at my home. The Apple Store folks say that aside from assigning specific channels, they have only "default" settings. I tried changing my channel to something other than Automatic ... but it doesn't help.
Since the earlier post - I've set-up the older 802.11g unit and got screen captures of all the settings. Then went back to the 802.11n and ensured that the set-up of the two units are identical (to the extent there is 1-to-1 correspondence).
also: two of my systems also have the latest releases of Quicktime and Flip4Mac. They have problems of their own! (See their discussion forums). But my older iBook has the same software that has been used without issues for the past several months. The only "new" item in the system is the new 802.11n base station.
iBook G4, MacPro, iMac   Mac OS X (10.4.9)   see message content

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