Ubuntu is doing strange things
Recently my Ubuntu 11.10 is having random problems after start up. For example, now I don't have sound and it seems that the videos are running speed up. Previously, I had sound, but I was unable to control it via the main sound level, I mean, when I pressed + or - in my laptop or grabbed the pot meter next to the clock it didn't affected the sound level, only the look of the icon. And I also had mouse problems, the driver freezed i guess.
Can someone tell me what can cause such things?