Earlier today Apple released QuickTime 7.0.4. It was said to have numerous bug fixes and provided compatibility with iLife ’06. Now, Apple has mysteriously pulled the updater, and issued a QuickTime 7.0.1 Reinstaller. No reason is given why.
If you haven’t already installed the update… don’t. If you did, it may be a good idea to run the 7.0.1 reinstaller.
Found via MacMinute
UPDATE: It appears as though Apple has re-issued the 7.0.4 update. Both the web site and the Software Update feature of OSX appear to have the new installer. If you are unsure what version you installed, it may be a good idea to run the 7.0.1 reinstaller, and then upgrade again.