mpd5/Netgraph issues after upgrading to 7.4

Mon Apr 11 10:51:06 UTC 2011

> Increase sysctl kern.ipc.maxsockbuf.
> I was forced to rise it upto 80MB (sic!) as 8MB was not enough to me.

Yay, things are getting worse. Increasing maxsockbuf caused crash after 2-3
hours. There was no crashdump and the last thing in log was:

Apr 11 12:32:40 lsm-gw kernel: ad4: FAILURE - out of memory in start
Apr 11 12:33:00 lsm-gw last message repeated 125 times

I suppose, I'm hitting some kind of kernel memory limit, maybe because of leak.
Any ideas, how can I track it down?