Windows OS version: 6.1.7601.2.00010100.1.0.004
Build lab: 7601.win7sp1_rtm.101119-1850
I must admit, I've never seen a debug build of Windows 7 (let alone attempted to run MGADIag and WAT on one) - but essentially it should have all the same capabilities as the normal build, but with many more error-traps in it.
What Anti-Virus are you using?
Your report indicates that the system is licensed and activated although, as Golden stated, the WAT Update isn't installed.
It's possible that your occasional notifications are being caused by a 'race condition' - either as a result of conflicts between the installed programs, or simply because of the fact that it's a debug build.
Unfortunately if this is a debug build, then there is no way to change that short of a reformat/reinstall - the bits are significanty different, to allow the extra processing required.
You may want to read more about it here... http://www.betaarchive.com/forum/viewtopic.php?t=4186
Offhand I don't know an easy way to tell if it's the debug build or not - I suspect that it may show in MSINFO32 in the System Summary, but I can't swear to it as I currently have no such build handy.
Sorry I can't be more specific than that!