User Agent String Utility Version 2 has been released...
UAST V2 can be downloaded here:
It's not really a version 2, but rather a version 2A; there is a previous version 2, but the one available for download seems to have some functionality removed.
Original version 2:
New version 2:
It is a pity the ability to report problem URLs to Microsoft has been removed; I quite liked that feature and it was very empowering for the user to be able to do this, with the knowledge that site owners would be more likely to listen to the IE team. We, the hoi poloi, simply get the brush-off, being told "reinstall IE7" or "uninstall IE7" or no response at all. MS are harder to ignore.
An improvement to UAS is the explanatory page that appears when you start the utility, stored here:
C:\Program Files\Microsoft User Agent String Utility\IE7asIE6.htm
When I start UAS using the desktop shortcut I see this error - the error does not occur when I start UAS using the program menu shortcut: