After updating to 10.7.2 the other day I noticed some lag on my mouse in the VM, and after looking I found it was due to the .kext shown in the above video. Just follow the instructions and you should be fine. You can use Kext Helper b7 if you prefer. Blog post here for more info: wp.me
Read the rest here:
[Tutorial] How To Fix Trackpad Issue On Lion 10.7.2 On Hackintosh Or PC