Surely you've read the hoopla over the recent Flash vulnerability. The official download link is here. But if you're like me, you don't want to install an application just to get a patch so the direct download links are here.
Now that that's out of the way, there's something new in Flash 10.1. Hardware acceleration has been turned on by default. If you know what that means I'm sure you're excited. If you don't (like me) you'll also be excited when your power settings are ignored and leave your screen on all the time.
Not to worry. It's easy to fix. Bring up a page with Flash on it. Right click on the Flash object. Select "Settings." Click the leftmost tab at the bottom. Uncheck "Use hardware acceleration." Click on "Close."