I have two linux boxes that run all the time. I was away for a few days over New Year, and came home to find both boxes locked up with this on the screens, with the only differences shown by yy and xxxxxxxx: Red Hat Enterprise Linux WS release 4(Nahant) Kernel 2.6.9-5.EL on an i686 mbrcyy login: Clock: inserting leap second: 23:59:60 UTC Kernel panic - not syncing: net/ipv4/tcp_timer.c:211: spin_lock(net/ipv4/tcp_minisocks.c:xxxxxxxx) already locked by net/ipv4/tcp_ipv4.c/1790 yy = 32, xxxxxxxx = f5fee080 yy = 20, xxxxxxxx = c276aa40 I add that both boxes are running: ntpd (but only one talks to the outside world) net_queue_d, a new and rather complex libipq daemon I am developing I of course suspect my libipq daemon, but the apparent relation to the leap second is peculiar. Assistance would be much appreciated. If additional information would help, please tell me what it is. Thanks, Mike. -- Michael D. Berger m.d.berger@xxxxxxxx