My problem is exactly the same, as the one solved in this thread: http://forums.adobe.com/message/2356898#2356898
Flash is just unusable, because of extremely slow performance. Selecting a tool or typing in actionscript takes forever. I've also noticed that sometimes (yes only sometimes), flash.exe takes alot of CPU usage, even when doing simple things like mentioned above.
At the same machine, 2 days ago, before upgrading from Vista Ultimate x64 to Windows 7 Ultimate x64, everything was working perfect.
Please help me as soon as possible. Thanks in advance.
I got the same problem on W7 (32-bit). I also notice that firefox really slows down on pages with lot of flash. I didn't had that problem when I was using XP.