A few updates: I did try rerunning the gdb backtrace after installing libc6-dbg but got the same backtrace. I had already downgraded libnss-ldap to 7.4, but nscd still ended up eating all the CPU.
I had previously done a "nscd -i hosts" (and passwd and group) I believe which didn't help. Finally I stopped nscd, removed /var/db/nscd/* and restarted nscd (with the libc6-dbg package installed). So far it has been a week with no problems, no crashes, no 100% CPU usage. I suspect there was a problem with /var/db/nscd/* files. I had been upgraded all the boxes (including LDAP servers) from sarge to etch. Adrian -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]