Index: media.php
===================================================================
--- media.php	(revision 14880)
+++ media.php	(working copy)
@@ -1434,7 +1434,8 @@
 <?php
 // Check quota for this blog if multisite
 if ( is_multisite() && !is_upload_space_available() ) {
-	echo '<p>' . __('Sorry, you must delete files before you can upload any more.') . '</p>';
+	$file_upload_max_message = get_site_option( 'file_upload_max_message' );
+	echo '<p>' . __( $file_upload_max_message ) . '</p>';
 	return;
 }