Crash while building a port

My system:

FreeBSD jsmith.org 5.2.1-RELEASE-p4 FreeBSD 5.2.1-RELEASE-p4 #0: Sat 
Apr  3 08:31:21 EST 2004     
jsmith_at_jsmith.org:/usr/obj/usr/src/sys/MYKERNEL  i386

When building a package, I got the message


===>  Configuring for p5-Gnome2-1.00_1
Fatal error 'Unable to read from thread kernel pipe' at line 1100 in 
file /usr/src/lib/libc_r/uthread/uthread_kern.c (errno = 0)
Abort trap (core dumped)
*** Error code 134

Stop in /usr/ports/x11-toolkits/p5-Gnome2.
** Command failed [exit code 1]: /usr/bin/script -qa 
/tmp/portupgrade97272.134 make
** Fix the problem and try again.

This only affected the port-build --- the rest of the system continues 
to run OK.
Any suggestions?

Thank you!

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