I have just upgraded to xubuntu 9.10 and I have game issues.I can navigate around the UI in a station but when I launch I have no mouse or keyboard control over the ship I have to alt-F4 to kill the program.

Oh and the music that I set to mute bizarrely comes back

I upgraded to the final RC, but not xubuntu.. and only experienced some temporary sound issues. There are some odd ball things that are still getting fixed though, although I personally have not experienced any of them. (I upgraded from 9.04 also)

Also, check the release notes: http://www.ubuntu.com/getubuntu/releasenotes/910

I couldn't solve the problems so I went back to 9.04 I will investigate and report back