I have quite a lot problems lately(about 2 weeks) running Ubuntu 11.10.

First, flash playback in chrome hangs and lags all the time. While in Firefox is better, but still lags. Playing video files in the preinstalled Movie Player lags too.

Second, I've turned automatic on and in some occasions, after I switched the computer on and successfully loaded the desktop, however, in just a minute or so, the screen just got black out and directed me back to the login page.

I thinks there are bugs, please tell me how to correct those.

Sysinfo:

CPU: i5-2400

MB: GA H61M D2P B3 (no video card)

Drive: Intel 320 40GB

Thanks.

p.s. should I upgrade to 12.04??