Ah, the random update breakages... This seems to be getting typical for Ubuntu. Have you tried doing a manual flash install though? (BTW, the problem is more likely to be Adobe's fault since Flash on Linux is pretty badly implemented, and I don't think the 64 bit flash is even official.) You could always try Gnash which is getting better all the time.Well I have it on a Virtual Machine and cannnot get the sound to work as others have reported for VM's.
I also have it on my home machine and have 64 bit Adobe flash issues. can't seem to fix with common fixes. I have ran into this before 9.10 though.
Ah, the random update breakages... This seems to be getting typical for Ubuntu. Have you tried doing a manual flash install though? (BTW, the problem is more likely to be Adobe's fault since Flash on Linux is pretty badly implemented, and I don't think the 64 bit flash is even official.) You could always try Gnash which is getting better all the time.