freebsd stable - Dec 2003 - 4.9-RELEASE kernel panic (page fault) at /usr/src/sys/kern/kern_timeout.c:252

Hello.

Can anybody please give some advise to prevent this strange
kernel panics on FreeBSD 4.9?
(see http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/59185)

In addition to PR text I found than crashes become less often with
sysctl kern.timecounter.method set to 1. As I said, similiar panics
were with 4.8-RELEASE but I thought this depends on broken xl(4) and
had no coredumps. Kernel crashes always at /usr/src/sys/kern/kern_timeout.c:252

Thank you.

-- 
Best regards,
 Alexey                          mailto:megapopoff@mail.ru