I notice that are other work around for fixing the flash player for mozilla, I try one of them and
I could not make work fine. image was slow or lack of sound etc. etc.
so here is the another fix that so far has been working fine
1- download flash player from macromedia
installl it and then run this command as root
ln -s /usr/lib/libstdc++.so.5 /usr/lib/libstdc++-libc6.2-2.so.3
and viola will work fine.