Comment 10 for bug 258899

There are several users who have fixed this problem by download manually, version 10 of flash, and copying it into the home user's plugin folder (see the thread http://ubuntuforums.org/showthread.php?s=c1bb3a94e4f9fe720266d6cda0d1259f&t=891458
for details).

I tried to do the same thing with the version 9 plug-in (found in /usr/lib/flashplayer-nonfree, iirc) and it ended up crashing.