mount.smb passes smbmount it arguments in the wrong order.
This trivial patch fixes that:

--- mount.smb-orig	Wed May 19 15:24:46 1999
+++ mount.smb	Wed May 19 15:15:21 1999
@@ -39,7 +39,7 @@
 done

 if [ -n "$PASSWD" ]; then
-      exec smbmount "$1" $USER $PASSWD -c "$COMMAND"
+      exec smbmount "$1" $PASSWD $USER -c "$COMMAND"
 else
       exec smbmount "$1" -N $USER -c "$COMMAND"
 fi

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