Related link: http://www.decaffeinated.org/archives/2004/11/22/popups
The pop-up blocker in Firefox is wonderful, but it’s stop worrking. I thought I had messed something up, but the other side has just coded around it.
In short, Flash is popping up these windows from within its code, and Firefox can’t block what it can’t see.


Fix
Download adblock. Adblock will block Flash plugins that you specify. Then you can block the Flash which calls the pop-up.
I get a similar issue on mlb.com, very frustrating.
Flashblock
http://flashblock.mozdev.org/installation.html (the version for 1.0RC3 works in 1.0)
Arm's race
Battles will be won, sometimes decisively, but the war is never truly over.
Older versions, including 1.0RC3 can be found here
http://mozdev.sweetooth.org/flashblock/