Index: mage/usr/lib/mage/museradd
===================================================================
--- mage/usr/lib/mage/museradd	(Revision 2643)
+++ mage/usr/lib/mage/museradd	(Arbeitskopie)
@@ -32,6 +32,7 @@
 			-u) shift; [[ $1 -lt 100 ]] && FIXED_USER_OPTS+=" -S"; FIXED_USER_OPTS+=" -u $1" ;;
 			-r) FIXED_USER_OPTS+=" -S" ;;
 			-M) FIXED_USER_OPTS+=" -H" ;;
+			-l) continue ;; # just ignore this switch, adduser does not support it
 			*) FIXED_USER_OPTS+=" $1" ;;
 		esac
 		shift