Threading server exits ERESTARTNOHAND

[Rune Hansen]

select(0, NULL, NULL, NULL, {0, 8000})  = 0 (Timeout)
futex(0x822f530, FUTEX_WAKE, 1)         = 0
gettimeofday({1075823054, 603000}, NULL) = 0
futex(0x822f530, FUTEX_WAKE, 1)         = 0
select(0, NULL, NULL, NULL, {0, 16000}) = 0 (Timeout)
futex(0x822f530, FUTEX_WAKE, 1)         = 0
gettimeofday({1075823054, 623210}, NULL) = 0
futex(0x822f530, FUTEX_WAKE, 1)         = 0
select(0, NULL, NULL, NULL, {0, 30370}) = ? ERESTARTNOHAND (To be restarted)
+++ killed by SIGSEGV +++

This is the output from strace -o xx python2.3 Spider.py, Spider.py 
being a threaded web crawler. The server segfaults at no specific 
interval, running for 30 secs and up to 10-15 minutes.

I can't figure out what's going on. In my years of threaded programming 
this is the first time I've seen it (if it makes me a novice, please 
don't rub it in :) I've found some information about "ERESTARTNOHAND" 
(one hint was /etc/security/limits.conf) and gotten the feeling that it 
has more to do with RedHat 9.0 than python2.3.3, but I'd really like to 
hear from someone who perhaps has got some experience with this.

Server and setup:
Compiled Python2.3.3 on RedHat 9.0 with default Athlon kernel.

The server starts a XMLRPCServer and Controller. The Controller starts 
15 threads doing urllib2.urlopen with data, using queue.get_nowait(), 
received on the XMLRPCServer . Each thread has it's own MySQLdb 
connection doing INSER DELAYED.
mxTidy is used before data is fed to an HTMLParser instance.

regards

/rune