backlinks only show to www.widgets.com/index.shtml

[bobmark]

Apologies if this has been covered before. I can't seem to find a ref.

My site recently went PR0 (4 years PR 4-5 no questionable practices) and my backlinks shows as zero on a:
link:www.widgets.com

However: link:www.widgets.com/index.shtml

shows normal backlinks.

I checked a few of the backlinks and the text links are as they have always been "http://www.widgets.com/"

Nothing has changed to cause this as far as I know. Any ideas?