I’m using Ubuntu 12.10 with 3.5.0-26-generic kernel version. today a system error occurred and the only thing about the error code I can remember was something about power.d.
Since this error occurred, the wifi connection is extremely slow, but only in battery mode. after some research I found that:
sudo iwconfig eth1 power off
... solves the problem, but only for the current session; after a reboot the same error is still there.
Is there any other solution to fix this problem permanently?