http://support.apple.com/downloads/Multi_Touch_Trackpad_Update_for_Windows___Vista Prior Symptoms (From Apple): -When using your thumb to click an item the cursor may move slightly and not select the intended item. -The cursor may shake when you press or remove your finger from the trackpad. -If you press down with your thumb, then use your finger to select or drag an item, the cursor may unexpectedly release. First of all, I'm glad that Apple has taken the time to address this major issue (finally). However, it's worse now than it was before IMO. Resulting Symptoms: -Single-finger physical click still does not register 20% of the time. -When using thumb to click and drag, the cursor still releases, but now registers as a double-click. -Tap-to-click now works, but is waaayyyy too sensitive (just browsing the web took me to 10 different unintended links simply by moving the mouse around the page) -Tap-to-click also registers as a double click more often than not. -Two-finger tap to click now works, but you can't click out of it with your thumb still on the trackpad. -Two-finger scroll sensitivity still hasn't been addressed. Edit: So, most of the problems above are simply because I had tap-to-click enabled in the settings (which I would prefer, but since the feature does more harm than good, I turned it off.) Now, everything seems to be working better, except for the fact that the three-finger physical right click doesn't work anymore. Meaning, without tap-to-click enabled, you can't right click in Boot Camp. I'm absolutely frustrated, and wishing I could return this 9-day old machine for a full refund. Instead, I'll just have to anxiously await another patch (but I'm not holding my breath).