Upgrade to OSX 10.9 from 10.8 causes random restarts

I'm betting that it's this kernel extension:

com.silex.driver.sxuptp

Do you have anything that matches that name in /Library/Extensions (likely), or /System/Library/Extensions? If so, it may help to remove the file and reboot.

It appears that this software may be related to a Belkin product

Thank you - Very helpful - I had the same rebooting issue after installing silex virtual port software for printing from Dlink Router USB Port

Model Identifier: MacBookPro8,1 Processor Name: Intel Core i7 Processor Speed: 2.8 GHz System Version: Mac OS X 10.7.5 (11G63b)

Removing the program and this file fixed the issue /System/Library/Extensions/SXUPTP.kext

Resolved