LS- i was having problems myself, turns out it's because my mac has a power pc processor instead of the intel processor...adobe flash has dropped support of the ppc platform. to fix this problem, i ultimately had to uninstall flash, then find the archived debug version of flash and install it. version 10.1 i believe worked for me...somewhat. i can now log into chat, and i am able to view youtube videos, but they are choppy, and some other sites w/video show up a missing plug in message. i don't know what you have for a computer, but i hope this helps.