[6.5.2] potentially major bug?

Okay, I don't know if this has been fixed in 7.0, but:

webcounter=> drop index webhit_referer_raw_url;
DROP
webcounter=> create index webhit_referer_raw_url on webhit_referer_raw using btree ( referrer_url );
CREATE
webcounter=> vacuum verbose webhit_referer_raw;
NOTICE:  --Relation webhit_referer_raw--
NOTICE:  Pages 7910: Changed 3, Reapped 2192, Empty 0, New 0; Tup 547520: Vac 43402, Keep/VTL 0/0, Crash 0, UnUsed
4871,MinLen 60, MaxLen 312; Re-using: Free/Avail. Space 4388524/4361716; EndEmpty/Avail. Pages 0/915. Elapsed 0/0 sec.
 
NOTICE:  Index webhit_referer_raw_url: Pages 5048; Tuples 547400: Deleted 0. Elapsed 0/2 sec.
NOTICE:  Index webhit_referer_raw_url: NUMBER OF INDEX' TUPLES (547400) IS NOT THE SAME AS HEAP' (547520)
ERROR:  Invalid XID in t_cmin

Thoughts?  Is this something that is fixed in 7.0 right now?  This is a
semi-production system right now, so the loss of information would be most
unfortunate :(

Marc G. Fournier                   ICQ#7615664               IRC Nick: Scrappy
Systems Administrator @ hub.org 
primary: scrappy@hub.org           secondary: scrappy@{freebsd|postgresql}.org