Problem started with Hamachi after upgrading my Mac to OS X Lion. I made a clean installation of OS X lion on a blank HDD. After that I have downloaded the latest version of Hamachi v2.1.065 as well as VMware Fusion 4.0.1. Now the Hamachi is preventing Lion from shutting down. I can only see spinning hash marks on the place of shutdown screen. Also the Hamachi causing the kernel panic on startup. Does anyone else notice this problem?