error compiling firefox

[Sean McNeil]

Anyone else seeing this error?

gmake[4]: Leaving directory
`/usr/ports/www/firefox/work/mozilla/security/nss/cmd/shlibsign/mangle'
FreeBSD5.2_DBG.OBJ/shlibsign -v -i
/usr/ports/www/firefox/work/mozilla/dist/lib/libsoftokn3.so
Assertion failure: _PT_PTHREAD_MUTEX_IS_LOCKED(lock->mutex), at
ptsynch.c:207
Abort trap (core dumped)
gmake[3]: ***
[/usr/ports/www/firefox/work/mozilla/dist/lib/libsoftokn3.chk] Error 134
gmake[3]: Leaving directory
`/usr/ports/www/firefox/work/mozilla/security/nss/cmd/shlibsign'
gmake[2]: *** [libs] Error 2