--- cryptpw.install-orig	2010-02-16 09:03:24.000000000 -0800
+++ cryptpw.install	2010-02-16 09:04:55.000000000 -0800
@@ -35,4 +35,14 @@
 
 function cryptpw_uninstall() {
   drupal_uninstall_schema('cryptpw');
+
+  variable_del('cryptpw_auto_create');
+  variable_del('cryptpw_auto_delete');
+  variable_del('cryptpw_domains');
+  variable_del('cryptpw_gid');
+  variable_del('cryptpw_maildir');
+  variable_del('cryptpw_mailspool');
+  variable_del('cryptpw_options');
+  variable_del('cryptpw_quota');
+  variable_del('cryptpw_uid');
 }
\ No newline at end of file