i have the problem. My macbook pro Early 2011 have many kernet panic. No usb or firewire drive plugged.
luckyexplorer, Please start a separate thread of your own and post the kernel panic log.
You can find it in the Console app, System Diagnostic Reports.
To post a new thread, click on New, above, and select Discussion.
Then, click on the Mountain Lion link:
Retrieving data ...