[Squid 2.1] pinger not running (assertion failed)

I sent this to the list Tuesday but did not get any hint.

===========================================

In my cache.log:

1998/11/17 10:38:11| pinger: ICMP socket opened
size mismatch, guess=-8154 psize=20
(pinger): pinger.c:174: pingerSendEcho: Assertion `icmp_pktsize <=
(sizeof(struct icmphdr) + sizeof (char) + sizeof(struct timeval) + 1)'
failed.
1998/11/17 10:38:13| Configuring Parent pb.cache.nlanr.net/3128/3130
1998/11/17 10:38:13| icmpRecv: recv: (111) Connection refused
1998/11/17 10:38:13| Closing Pinger socket on FD 51

This is on Linux 2.0.36.

-- 
Marc Delisle                              
Services administratifs (informatique)
Coll�ge de Sherbrooke      
Qu�bec.  819/564-6350 poste 223