Process did not exit cleanly

[pucky]

I'v seen this occuring on my FreeBSD boxes more often lately. Tonight its exceptionally bad. In fact, its ridiculous.

Oct 10 17:59:17 tx1000 last message repeated 3 times
Oct 10 17:59:50 tx1000 last message repeated 3 times
Oct 10 18:00:01 tx1000 szabados: Process did not exit cleanly, returned 255 with signal 0
Oct 10 18:00:34 tx1000 last message repeated 3 times
Oct 10 18:02:35 tx1000 last message repeated 11 times
Oct 10 18:12:40 tx1000 last message repeated 55 times
Oct 10 18:22:45 tx1000 last message repeated 55 times
Oct 10 18:32:51 tx1000 last message repeated 55 times
Oct 10 18:42:56 tx1000 last message repeated 55 times
Oct 10 18:52:50 tx1000 last message repeated 54 times
Oct 10 19:02:56 tx1000 last message repeated 55 times
Oct 10 19:12:50 tx1000 last message repeated 54 times
Oct 10 19:22:54 tx1000 last message repeated 52 times
Oct 10 19:32:48 tx1000 last message repeated 54 times
Oct 10 19:42:54 tx1000 last message repeated 55 times
Oct 10 19:52:59 tx1000 last message repeated 55 times
Oct 10 20:02:54 tx1000 last message repeated 54 times
Oct 10 20:12:59 tx1000 last message repeated 55 times
Oct 10 20:18:38 tx1000 last message repeated 23 times

Whats going on with this?