I run Windows XP, SP3 and use both IE and Firefox. AVG Free, SuperAntiSpy Free, and SpywareBlaster are running; Windows Defender is present but turned off.
I have downloaded OTL (but saved it to My Docs, w/ shortcut on Desktop) and ran (and saved 3 files from) two scans, the first the quick version w/ no settings changed. I don't see any obvious problems, but understand too little for that to be significant.
Since this message is reoccurring during the same session, both in IE and FF, I am wondering if it's a 'false alarm' rather than the 'Watch Dog' process actually being turned off.
In any case, I'd like to fix the problem. At least my back isn't killing me this time!