im running ubuntu 8.04 32 bit and found that removing the flash plugin file from /usr/lib/firefox/plugins solves the issue. try it and let me know if it works for you 64 bit users.
BEST OF LUCK! -- firefox shows grey box instead of flash player on amd64 https://bugs.launchpad.net/bugs/246450 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs