diff --git a/etc/example.conf b/etc/example.conf
index 356944ef..be922d93 100644
--- a/etc/example.conf
+++ b/etc/example.conf
@@ -26,6 +26,10 @@ default_retention_days=2557
 iv=****************
 
 ; whether to encrypt messages (1) or not (0).
+; Make sure to set this value to your needs right after installing piler,
+; and don't change it after you got the first email. Otherwise
+; you'll have half the archive encrypted, the other half unencrypted
+; which will cause problems.
 encrypt_messages=1
 
 ; number of worker processes, ie. the number of simultaneous smtp connections to piler.
diff --git a/etc/sphinx.conf.in b/etc/sphinx.conf.in
index feb419a7..3e202880 100644
--- a/etc/sphinx.conf.in
+++ b/etc/sphinx.conf.in
@@ -176,7 +176,7 @@ index note1
 
 indexer
 {
-	mem_limit		= 64M
+	mem_limit		= 256M
 }