inurl: will not show supplemental results, it's just a quick means of finding how many of your URL's are actually in the index not in the "SUPPLEMENTAL" index.
Are any of your sites a TBPR 6 or greater? I know, I know, TBPR is useless, blah, blah, blah, but what other PR tool can we go off of? I'd be surprised to see a TBPR 6 site going supplemental at all unless it has duplicate content in Google's eyes. My TBPR sites that are 5 or greater seem to be gaining "REGULAR INDEX" status whereas my lower PR sites in the 3-4 range are going supplemental FAST, unique content or not.
[edited by: MLHmptn at 5:52 am (utc) on April 13, 2007]