--- /usr/lib/squid3/wbinfo_group.pl     2011-02-22 17:23:47.000000000 +0100
+++ /etc/squid3/ad_group.pl     2011-09-21 15:52:20.089463160 +0200
@@ -57,8 +26,9 @@
         chop $groupGID;
         &debug( "User:  -$user-\nGroup: -$group-\nSID:   -$groupSID-\nGID:   -$groupGID-");
         return 'ERR' if($groupGID eq ""); # Verify if groupGID variable is empty.
-        return 'ERR' if(`wbinfo -r \Q$user\E` eq ""); # Verify if "wbinfo -r" command returns no value.
-        return 'OK' if(`wbinfo -r \Q$user\E` =~ /^$groupGID$/m);
+        return 'OK' if(`getent passwd | grep $user | grep -o $groupGID` =~ /^$groupGID$/m);
         return 'ERR';
 }
