Just installed 11.04 fresh today, and had absolutely no issues until I rebooted. Now, the moment I log in, sound is dead, and going to sound preferences from the sound menu just gives a message saying "waiting for sound server to respond", firefox hangs the moment you click on any UI element, and playing videos in Totem causes it to hang immediately.

I had this issue on my Mint 10 install, so I cleared that and installed 11.04, since I wanted to try Unity anyway, but now the same problem is back. Ironically, Windows is currently my most stable OS on any of my computers.

If there is a fix for this, it would be greatly appreciated.