I got the new iMac with Intel Core 2 Duo. Was using Firefox 1.5 and flash
worked fine. I then went ahead and upgraded to FF2 when it came out.

Now websites with flash object wouldn't play at all. I uninstalled and
reinstalled both flash player and firefox, and still didnt fix anything.
removed all extensions (including adblock), still no luck. i tried visiting
those sites with Safari and flash works just fine.

anyone with this problem and found a fix for it? thanks!!

same problem here - seems to be an intel related problem. If I start Firefox2
under my Intel MacBook Pro, Flash doesn't work at all, but if I intead use
Rosetta to start Firefox2 everything is fine und Flash works without problems
....

looks like the UB-Flash isn't quite ready yet.