A recent malware (Trojan) incident on my machine and a friend's may be related to this, so I would advise doing an Adobe Flash Player upgrade ASAP given that there was a security issue with my previous version that had been updated in mid-June.
In addition, many popular web sites began "hanging" this morning due to a Flash Player script that was issuing a "may never finish" error message.
The current release can be installed here:
http://get.adobe.com/flashplayer/
The McAfee Security Scan Plus displayed on that page is entirely optional and not recommended (by me, anyway).