diff --git a/acl/acl-lib.pl b/acl/acl-lib.pl
index 3ddd3f692..768f4b873 100755
--- a/acl/acl-lib.pl
+++ b/acl/acl-lib.pl
@@ -18,9 +18,7 @@ do 'md5-lib.pl';
 %access = &get_module_acl();
 $access{'switch'} = 0 if (&is_readonly_mode());
 
-# XXX test with postgresql
 # XXX LDAP support
-# XXX infinite loop on failure
 
 =head2 list_users
 
@@ -271,7 +269,7 @@ if ($miniserv{'userdb'} && !$miniserv{'userdb_addto'}) {
 		$cmd && $cmd->execute($user{'name'}, $user{'pass'}) ||
 			&error("Failed to add user : ".$dbh->errstr);
 		$cmd->finish();
-		my $cmd = $dbh->prepare("select last_insert_id()");
+		my $cmd = $dbh->prepare("select max(id) from webmin_user");
 		$cmd->execute();
 		my ($id) = $cmd->fetchrow();
 		$cmd->finish();
@@ -733,7 +731,7 @@ if ($miniserv{'userdb'} && !$miniserv{'userdb_addto'}) {
 		$cmd && $cmd->execute($group{'name'}, $group{'desc'}) ||
 			&error("Failed to add group : ".$dbh->errstr);
 		$cmd->finish();
-		my $cmd = $dbh->prepare("select last_insert_id()");
+		my $cmd = $dbh->prepare("select max(id) from webmin_group");
 		$cmd->execute();
 		my ($id) = $cmd->fetchrow();
 		$cmd->finish();
@@ -1751,11 +1749,11 @@ if ($str =~ /^mysql:/) {
 	}
 elsif ($str =~ /^postgresql:/) {
 	return ( "create table webmin_user ".
-		   "(id int8 not null primary key, ".
+		   "(id serial not null primary key, ".
 		   "name varchar(255), ".
 		   "pass varchar(255))",
 		 "create table webmin_group ".
-		   "(id int8 not null primary key, ".
+		   "(id serial not null primary key, ".
 		   "name varchar(255), ".
 		   "description varchar(255))",
 		 "create table webmin_user_attr ".
diff --git a/acl/maketables.cgi b/acl/maketables.cgi
index 8e6b61a00..6f3d1882f 100755
--- a/acl/maketables.cgi
+++ b/acl/maketables.cgi
@@ -20,9 +20,16 @@ foreach $sql (&userdb_table_sql($in{'userdb'})) {
 		print &text('make_failed', &html_escape($dbh->errstr)),"<p>\n";
 		}
 	else {
+		$cmd->finish();
 		print $text{'make_done'},"<p>\n";
 		}
 	}
+&disconnect_userdb($in{'userdb'}, $dbh);
+
+# XXX create table fails for postgresql!!
+#$dbh = &connect_userdb($in{'userdb'});
+#$cmd = $dbh->prepare("select * from webmin_user");
+#$cmd && $cmd->execute() || &error("select failed : ".$dbh->errstr);
 
 # Check again if OK
 $err = &validate_userdb($in{'userdb'}, 0);
diff --git a/miniserv.pl b/miniserv.pl
index cd7a18d27..f0c991112 100755
--- a/miniserv.pl
+++ b/miniserv.pl
@@ -2061,6 +2061,11 @@ if (&get_type($full) eq "internal/cgi" && $validated != 4) {
 					$baseauthuser : undef;
 	$ENV{"REMOTE_PASS"} = $authpass if (defined($authpass) &&
 					    $config{'pass_password'});
+	$uinfo = &get_user_details($baseauthuser);
+	if ($uinfo && $uinfo->{'proto'}) {
+		$ENV{"REMOTE_USER_PROTO"} = $uinfo->{'proto'};
+		$ENV{"REMOTE_USER_ID"} = $uinfo->{'id'};
+		}
 	print DEBUG "REMOTE_USER = ",$ENV{"REMOTE_USER"},"\n";
 	print DEBUG "BASE_REMOTE_USER = ",$ENV{"BASE_REMOTE_USER"},"\n";
 	$ENV{"SSL_USER"} = $peername if ($validated == 2);
diff --git a/web-lib-funcs.pl b/web-lib-funcs.pl
index 844111841..bc079ca8f 100755
--- a/web-lib-funcs.pl
+++ b/web-lib-funcs.pl
@@ -1314,6 +1314,7 @@ by the message setup using that function.
 =cut
 sub error
 {
+$main::no_miniserv_userdb = 1;
 my $msg = join("", @_);
 $msg =~ s/<[^>]*>//g;
 if (!$main::error_must_die) {
@@ -1392,6 +1393,7 @@ headers suitable for a popup window.
 =cut
 sub popup_error
 {
+$main::no_miniserv_userdb = 1;
 &load_theme_library();
 if ($main::error_must_die) {
 	die @_;
@@ -3316,8 +3318,9 @@ elsif ($u ne '') {
 	# Use normal Webmin ACL, if a user is set
 	my $userdb = &get_userdb_string();
 	my $foundindb = 0;
-	if ($userdb) {
-		# Look for this user in the user/group DB
+	if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
+		# Look for this user in the user/group DB, if one is defined
+		# and if the user might be in the DB
 		my ($dbh, $proto) = &connect_userdb($userdb);
 		ref($dbh) || &error(&text('euserdbacl', $dbh));
 		if ($proto eq "mysql" || $proto eq "postgresql") {
@@ -3465,7 +3468,7 @@ if (!$_[3] && &foreign_check("acl")) {
 
 my $userdb = &get_userdb_string();
 my $foundindb = 0;
-if ($userdb) {
+if ($userdb && ($u ne $base_remote_user || $remote_user_proto)) {
 	# Look for this user in the user/group DB
 	my ($dbh, $proto) = &connect_userdb($userdb);
 	ref($dbh) || &error(&text('euserdbacl', $dbh));
@@ -3849,6 +3852,9 @@ my $u = $ENV{'BASE_REMOTE_USER'} || $ENV{'REMOTE_USER'};
 $base_remote_user = $u;
 $remote_user = $ENV{'REMOTE_USER'};
 
+# Work out if user is definitely in the DB
+$remote_user_proto = $ENV{"REMOTE_USER_PROTO"};
+
 if ($module_name) {
 	# Find and load the configuration file for this module
 	my (@ruinfo, $rgroup);
@@ -8946,6 +8952,7 @@ Returns the URL-style string for connecting to the users and groups database
 =cut
 sub get_userdb_string
 {
+return undef if ($main::no_miniserv_userdb);
 my %miniserv;
 &get_miniserv_config(\%miniserv);
 return $miniserv{'userdb'};
@@ -8971,6 +8978,7 @@ if ($proto eq "mysql") {
 	$cstr .= ";port=$port" if ($port);
 	my $dbh = $drh->connect($cstr, $user, $pass, { });
 	$dbh || return &text('sql_emysqlconnect', $drh->errstr);
+	$dbh->{'AutoCommit'} = 1;
 	return wantarray ? ($dbh, $proto) : $dbh;
 	}
 elsif ($proto eq "postgresql") {
@@ -8982,6 +8990,7 @@ elsif ($proto eq "postgresql") {
 	$cstr .= ";port=$port" if ($port);
 	my $dbh = $drh->connect($cstr, $user, $pass);
 	$dbh || return &text('sql_epostgresqlconnect', $drh->errstr);
+	$dbh->{'AutoCommit'} = 1;
 	return wantarray ? ($dbh, $proto) : $dbh;
 	}
 elsif ($proto eq "ldap") {
@@ -9003,6 +9012,7 @@ sub disconnect_userdb
 my ($str, $h) = @_;
 if ($str =~ /^(mysql|postgresql):/) {
 	# DBI disconnnect
+	$h->commit();
 	$h->disconnect();
 	}
 elsif ($str =~ /^ldap:/) {