Well, if you have 7000 PCs to maintain, hopefully you've some software like Ghost you can use to send out the updated version. We did that here to upgrade our PCs from QuickTime 6.52 to 7.04 and it worked like a charm!
So to speak....After upgrading to 7.04, we started getting the problem mentioned elsewhere here, where audio no longer works. Downgrading back to 6.52 solved the problem but as there were security issues involved with the older version, we may have to remove the software.
PC Windows XP Pro