Which "latest" do you mean? 1.9 to 1.9.1 ? 1.8 to 1.9?

Gentoo 2005.0, pound-1.9.1

More evidence and details, please.

I  put a fragment from the log file on:
[ http://rafb.net/paste/results/DXlAfX42.html ]
For bad luck the LogLevel was 0, so not enough information for the requests :/
Recently I started to think that maybe it's not the pound problem, but we was just
DDoS-ed/overloaded. Still maybe the log will be interesting for somebody like
an example of pound under heavy load.