Comment 280 for bug 1239578

I'm having the same issues with system freezes. Sometimes I can still move my mouse and issue some terminal-commands, sometimes it completely freezes and the only thing I can do is to press the power-button until it turns off.

What I noticed is that the CPU Usage in my CPU Graph Indicator (XUbuntu) shows 1 CPU constantly on 100%, while at the same time top doesn't show any high CPU Usage. I cannot relate this to any specific process. If I can provide any diagnostics while in this high-CPU-usage-state, please let me know how I can help, as it's really annoying.

This only happens if I'm connected to a wireless network. For now, I just use the ethernet cable when I'm at my desk and turn off the Wifi connection manually.