[Exim] Memory issues with pgsql interface

Hi all,

I decided to run a mailing list of about 7000 people out of postgres with
Exim. I was quite surprised when queue runners were picking up the message
and using memory like this:

exim       566  8.6  6.5 289996 33820 ?      S    10:49   0:27 /usr/exim/bin/exim -qq

Has anyone come across this kind of thing when using the pgsql interface?

Gavin