Apple has released 10.8.3. Fixes a lot of issues, especially the one in which you could make a browswer crash by inputting a file address. You can download it from the Mac App Store, or if you want the combo link (updates any version of mountain lion) you can download it from Apple’s Website. I always like to grab the combo update and put it on my USB flash drive so I can update any family member or friends mac, without having to download additional updates.