Well, do yourself a favor and remember what did you change/install/remove/whatever before the issue appear. The kernel/device behaviour does not change out of the blue so there MUST be something you've done. Also you may want to install syslog and check for suspicious messages in /var/log/syslog. Have in mind that I've never told you to directly tweak /etc/pmconfig . Anyway, you can revert /etc/pmconfig to stock and check if the issue you have is because of the overclocking and/or SR. If the above does not result in issue resolution, just re-flash the ***** and start over.