diff -Naur smeserver-clamav-2.2.0-orig/root/etc/e-smith/db/configuration/defaults/clamd/MemLimit 
smeserver-clamav-2.2.0/root/etc/e-smith/db/configuration/defaults/clamd/MemLimit
--- smeserver-clamav-2.2.0-orig/root/etc/e-smith/db/configuration/defaults/clamd/MemLimit       2008-10-07 17:34:18.000000000 +0200
+++ smeserver-clamav-2.2.0/root/etc/e-smith/db/configuration/defaults/clamd/MemLimit    2010-04-02 12:48:18.044259444 +0200
@@ -1 +1 @@
-250000000
+600000000
diff -up 
smeserver-clamav-2.2.0/root/etc/e-smith/db/configuration/migrate/clamdMemLimit.MemLimit2 
smeserver-clamav-2.2.0/root/etc/e-smith/db/configuration/migrate/clamdMemLimit
--- smeserver-clamav-2.2.0/root/etc/e-smith/db/configuration/migrate/clamdMemLimit.MemLimit2	2010-04-18 19:05:27.000000000 +0200
+++ smeserver-clamav-2.2.0/root/etc/e-smith/db/configuration/migrate/clamdMemLimit	2010-04-18 19:06:33.000000000 +0200
@@ -1,5 +1,7 @@
 {
     my $clamd = $DB->get('clamd');
     return unless $clamd;
-    $clamd->set_prop('MemLimit', 250000000) if $clamd->prop('MemLimit') < 250000000;
+
+    my $size = 600000000;
+    $clamd->set_prop('MemLimit', $size) if $clamd->prop('MemLimit') < $size;
 }