--- conky-howto.xml.orig	2006-06-10 10:20:16.000000000 +0300
+++ conky-howto.xml	2006-06-10 10:34:47.000000000 +0300
@@ -108,6 +108,11 @@
 $ <i>conky</i>
 </pre>
 
+<note>
+Conky needs Double Buffer Extension (DBE) support from X server to prevent flickering, because it can't
+update window fast enough without it. It can be enabled in <c>/etc/X11/xorg.conf</c> with <c>Load "dbe"</c> line in <c>Section "Module"</c>.
+</note>
+
 <p>
 Once you have an idea of how Conky looks, you can now move on to configuring
 it!