-If ARG (the prefix), use the `ask-server' method to query
-the server for new groups."
- (interactive "P")
- (gnus-find-new-newsgroups arg)
+With 1 C-u, use the `ask-server' method to query the server for new
+groups.
+With 2 C-u's, use most complete method possible to query the server
+for new groups, and subscribe the new groups as zombies."
+ (interactive "p")
+ (gnus-find-new-newsgroups (or arg 1))