please test amavisd-new-2.6.4 and mark it stable if appropriate. the upstream release of 2.6.4 is almost 1 year old now...
I am using amavisd-new-2.6.4 in production on amd64 and hppa systems since 2009/09/01 without problems (20~30 thousand mails scanned every day). USE flags dkim mysql razor spamassassin -courier -ldap -milter -postgres -qmail It gives 'unaligned access' in HPPA's logs, they slow it down but are not critical bugs.
Agreeing for x86/amd64.
mail-filter/amavisd-new-2.7.0 stablereq in bug #381977.