Description:

After rebooting this morning (first reboot in two or three days) I get a latency of about one second every two seconds. It's impossible to work because neither mouse nor keybord work for that second. If I keep typing, some letters don't show up once the latency is over.

Additional info:
* powertop shows that one of the two processor cores is peaking to 100 percent during the latency times but no program seems to be resonsible. I shut everything (even hal, ...) down but it's still peaking.
* I thought it might be a kernel issue and tried kernel26-lts instead of kernel26 but the problem persists.
* A friend suggested using latencytop but it's not supported by the Arch kernel.