"That was the good news. The bad news is that if you
open multiple Flash videos or animations, either by design or by
accident, Flash 10 will crash. This will appear to make the Web
browser freeze-up or crash, but it's actually just the Flash
viewer, npviewer.bin. You can kill the npviewer.bin process and
your Web browser will be back to normal.
"I found this problem in both Kubuntu and openSUSE and a bit of
research showed me that the problem is in many, if not all, Linux
distributions. From where I sit this is really a Flash bug, rather
than a Linux bug."