Finally, what looks like some good news from Adobe!
You can see the bug report for the problem at https://bugbase.adobe.com/index.cfm?event=bug&id=2940617
You'll see the many, many post from companies and developers that have this problem with the latest flash player. Fortunately, its not just us that have been shouting at Adobe!
They are now at their highest priority and have been able to reproduce the problem themselves so they hope to have another new version of the flash player available in the next 48 hours that we hope will fix this problem.
If you can't wait that long then you can download the beta of the version 11 player using this link http://labs.adobe.com/downloads/flashplayer11.html
This appears to work fine so we can all breathe again!