Msg#: 13104 posted 5:35 pm on May 16, 2003 (gmt 0)
Does the dmoz page have more than 100 links? Beyond some threshold, the normal PR transfer rules don't seem to apply. Dropping three whole notches of PR (assuming it's PR8.0 and you're PR4.99) is quite normal for a page with say, 250 links.
Using the Google directory can you find other low PR pages of at least PR4, where the backlink shows? If yes, then the dmoz page may have a rare penalty. Does the category relate to a possible "poison word", or does it link to a few sites that may be considered bad neighbourhoods.