Has anybody else installed the flash plugin for Firefox so they can use YouTube (etc) through the Computing option? Do you find the performance to be really poor? I find that video refresh to be very slow indeed, to the point were you can actually see each frame being drawn (albeit very quickly) almost like watching video through a Remote Desktop or VNC session!
In the LinuxMCE-0710 release Firefox already has the flash plugin installed.
We certainly don't see this performance issue in our installs.