the current one is at: http://support.apple.com/kb/DL1581
(yes, use this Combo even though you are already running 10.8.2)
Repair permissions again immediately following the system restart that completes the Combo update. Then check whether your Mac's > Software Update... menu command tell you that other updates are needed. If so, apply them and finish with another permissions repair.
• If you still have problems after properly applying the Combo,
try OS X's Recovery feature http://www.apple.com/macosx/recovery/
to repair your hard drive or, if all else fails, reinstall a fresh copy of OS X.