Milter-greylist

Ok, my 3.0rc6 memory consumption issue is still happening in 3.0 (final).

After less than 24 hours my milter-greylist had it's "size" (via top) grow to
86852. 5 minutes later it had grown another 448.

so, I tried reducing the number of DNSRBL ACL's from 18 (3 actual sites) to 2 (2
actual sites) in my config and restarted. Now my growth rate is 44 per 5 mins
instead of 448.

Next I'll try disabling DNSRBLs entirely, but this begs the question: is anyone
else seeing milter-greylist grow noticeably when using DNSRBLs?