Today I got booted off one of the Compaq TestDrive HP-UX machines because it ran out of memory. Out of memory!?
I logged into the second machine and quickly did a top. I discovered some fuckwit sucking up 100% of the cpu and memory:
CPU TTY  PID USERNAME PRI NI   SIZE    RES STATE    TIME %WCPU  PU COMMAND 
The fact that the program is called "ecmloop" definitely raised some red flags.  It's just a shell script that executes some home-grown binary ('ecm') in a big-ass loop.  I couldn't tell for sure what it was doing though.  Why do people do shit like this?
 
In any case, I've reported this fuckwit to the folks at Compaq.  I hope they boot him off all the machines for good.
 
UPDATE: I forgot to look at the NICE values above.  It turned out to be someone else who was running a fork bomb.  I'm glad I reported it though, as they booted the guy doing the fork bomb.