I ran into this problem using htdig where at some point
during a normal dig, this message appears and seems to
run in an infinite loop. I googled a bit and it seems
as though no one has resolved this problem. I saw a
couple suggestions that folks try to figure out the
exact URL that is causing the problem. I am pretty
sure that is a dead end.
AFAIK the source of the problem is when htdig is killed
(CTRL-C in my case) halfway through a run. The next
time htdig is run, I believe that this bug may occur.
The way I fixed it was to "rm -f /var/lib/htdig/*" and
then run htdig again. <POOF!> Problem Solved.
Hope this helps.
- Rick Hull