Index: kernel/setup/extensions.php
===================================================================
--- kernel/setup/extensions.php	(revision 3217)
+++ kernel/setup/extensions.php	(working copy)
@@ -38,7 +38,8 @@
 $tpl = templateInit();
 
 $extensionDir = eZExtension::baseDirectory();
-$availableExtensionArray = eZDir::findSubItems( $extensionDir );
+$availableExtensionArray = eZDir::findSubItems( $extensionDir, 'dl' );
+sort( $availableExtensionArray );
 
 if ( $module->isCurrentAction( 'ActivateExtensions' ) )
 {