I have a PowerMac G5 running OS X Server 10.4.6. It is running
OpenSSH_3.8.1p1. When some of the users run certain perl scripts it
seems to block ssh. No one can log onto the system. Whwn I force quit
the perl program everything is okay. I have the below lines in my
system.log. They may be unrelated.

Apr 10 14:12:34 binf sshd[22139]: error: chown /dev/ttyp0 0 0 failed:
No such file or directory
Apr 10 14:13:49 binf sshd[26253]: fatal: mm_request_send: write

Thanks

Chris