Up-to-date lenny/sid should return 5.0 as version since 2008-12-04

install/lib/install.lib.php

@@ -70,7 +70,7 @@ function get_distname() {
 			$distbaseid = 'debian';
 			swriteln("Operating System: Debian 4.0 or compatible\n");
 		}
-		if(trim(file_get_contents('/etc/debian_version')) == 'lenny/sid') {
+		if(trim(file_get_contents('/etc/debian_version')) == '5.0') {
 			$distname = 'Debian';
 			$distver = 'Lenny/Sid';
 			$distid = 'debian40';
@@ -565,4 +565,4 @@ function is_installed($appname) {
 
 
 
-?>
\ No newline at end of file
+?>