suse 9 crashed

Hi,

Running SLES 9 (update 4) on dell's poweredge 1950 server.
Kernel: 2.6.5-7.315-smp #1 SMP Wed Nov 26 13:03:18 UTC 2008 x86_64 x86_64 x86_64 GNU/Linux

Yesterday night my monitoring service emailed me system(ssh/smtp) unreachable...I tried connection through ssh, it did not let me through and close connection.

then I tried system console ( I connect to text console remotely) that would ask me for authentication but after using root login also it gave error can not fork process or something along those lines.

Forunately I have ipmi configured, power soft did not work so I did power cycle or reset.

I am pasting a link to the relevent lines from /var/log/messages below,

Could someone please go through that link and tell me if this OS bug. ( am sure some users were programming on it, but crashing the system is not affordable) I would like to know if I can do anything for protecting from such a crash

Thanks!