diff --git a/webui/group-add.php b/webui/group-add.php
index 76ccb967efdebfdd391b59e1135651aae7b52775..0f155fa5a8adf75a4d97de17d1612b8d8f9593fb 100644
--- a/webui/group-add.php
+++ b/webui/group-add.php
@@ -82,28 +82,39 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "add") {
 
 <?php
 
-	$stmt = $db->prepare("INSERT INTO ${DB_TABLE_PREFIX}groups (Name,Priority,Disabled,Comment) VALUES (?,?,?,?)");
+	if (!empty($_POST['group_name'])) {
 
-	$res = $stmt->execute(array(
-		$_POST['group_name'],
-		$_POST['group_priority'],
-		$_POST['group_disabled'],
-		$_POST['group_comment'],
-	));
-	if ($res) {
+		$stmt = $db->prepare("INSERT INTO ${DB_TABLE_PREFIX}groups (Name,Priority,Disabled,Comment) VALUES (?,?,?,?)");
+
+		$res = $stmt->execute(array(
+			$_POST['group_name'],
+			$_POST['group_priority'],
+			$_POST['group_disabled'],
+			$_POST['group_comment'],
+		));
+		if ($res) {
+
+?>
+
+			<div class="notice">Group created</div>
+
+<?php
+
+		} else {
 
 ?>
 
-		<div class="notice">Group created</div>
+			<div class="warning">Failed to create group</div>
+			<div class="warning"><?php print_r($stmt->errorInfo()) ?></div>
 
 <?php
 
+		}
 	} else {
 
 ?>
 
-		<div class="warning">Failed to create group</div>
-		<div class="warning"><?php print_r($stmt->errorInfo()) ?></div>
+		<div class="warning">Group name cannot be empty!</div>
 
 <?php
 
diff --git a/webui/group-attribute-change.php b/webui/group-attribute-change.php
index 6008271e981cb3138fb5615a78ae93882abffa53..c39750e9611f1e474f8f54300f57d75defb4bdab 100644
--- a/webui/group-attribute-change.php
+++ b/webui/group-attribute-change.php
@@ -158,7 +158,7 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "change") {
 			$updateStr = implode(', ',$updates);
 
 			$res = $db->exec("UPDATE ${DB_TABLE_PREFIX}group_attributes SET $updateStr WHERE ID = ".$db->quote($_POST['attr_id']));
-			if ($res) {
+			if ($res !== FALSE) {
 
 ?>
 
diff --git a/webui/group-delete.php b/webui/group-delete.php
index 5f9b3927dfb351940a003b9a803e2da8c99f4e8d..5960f31007a3398e3234b0be139be4ecd8ca726c 100644
--- a/webui/group-delete.php
+++ b/webui/group-delete.php
@@ -79,57 +79,52 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "delete") {
 
 			$db->beginTransaction();
 
-			$resultRemoveMembers = $db->exec("DELETE FROM ${DB_TABLE_PREFIX}users_to_groups WHERE GroupID = ".$db->quote($_POST['group_id']));
-			$resultRemoveAttributes = $db->exec("DELETE FROM ${DB_TABLE_PREFIX}group_attributes WHERE GroupID = ".$db->quote($_POST['group_id']));
-			$resultRemoveGroup = $db->exec("DELETE FROM ${DB_TABLE_PREFIX}groups WHERE ID = ".$db->quote($_POST['group_id']));
-
-			if ($resultRemoveMembers && $resultRemoveAttributes && $resultRemoveGroup) {
-
+			$res = $db->exec("DELETE FROM ${DB_TABLE_PREFIX}users_to_groups WHERE GroupID = ".$db->quote($_POST['group_id']));
+			if ($res !== FALSE) {
+				$res = $db->exec("DELETE FROM ${DB_TABLE_PREFIX}group_attributes WHERE GroupID = ".$db->quote($_POST['group_id']));
+				if ($res !== FALSE) {
+					$res = $db->exec("DELETE FROM ${DB_TABLE_PREFIX}groups WHERE ID = ".$db->quote($_POST['group_id']));
+					if ($res !== FALSE) {
 ?>
-
-				<div class="notice">Group deleted</div>
-
+						<div class="notice">Group deleted</div>
 <?php
-
-				$db->commit();
+						$db->commit();
+					} else {
+?>
+						<div class="warning">Error deleting group</div>
+						<div class="warning"><?php print_r($db->errorInfo()) ?></div>
+<?php
+						$db->rollback();
+					}
+				} else {
+?>
+					<div class="warning">Error deleting group</div>
+					<div class="warning"><?php print_r($db->errorInfo()) ?></div>
+<?php
+					$db->rollback();
+				}
 			} else {
-
 ?>
-
 				<div class="warning">Error deleting group</div>
 				<div class="warning"><?php print_r($db->errorInfo()) ?></div>
-
 <?php
-
 				$db->rollback();
 			}
 		} else {
-
 ?>
-
 			<div class="notice">Group not deleted, aborted by user</div>
-
 <?php
-
 		}
 	# Warn
 	} else {
-
 ?>
-
 		<div class="warning">Invocation error, no group ID</div>
-
 <?php
-
 	}
 } else {
-
 ?>
-
 	<div class="warning">Invalid invocation</div>
-
 <?php
-
 }
 
 printFooter();
diff --git a/webui/group-main.php b/webui/group-main.php
index b54db36783e6d485b6120c4f5b1e7a16598eb52d..f5663832b3490011de6737f6959944a80d31dee4 100644
--- a/webui/group-main.php
+++ b/webui/group-main.php
@@ -83,7 +83,6 @@ printHeader(array(
 			$sql = "SELECT ID, Name, Priority, Disabled, Comment FROM ${DB_TABLE_PREFIX}groups ORDER BY ID";
 			$res = $db->query($sql);
 
-			$rownums = 0;
 			while ($row = $res->fetchObject()) {
 
 ?>
diff --git a/webui/user-attribute-delete.php b/webui/user-attribute-delete.php
index de48aa9be2fe23330f9ebeac1cb6014f9ee75e53..fc74bbaab7bd6dd23b78a263deafe413fa2e0600 100644
--- a/webui/user-attribute-delete.php
+++ b/webui/user-attribute-delete.php
@@ -80,7 +80,7 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "delete") {
 	if (isset($_POST['attr_id'])) {
 		if (isset($_POST['confirm']) && $_POST['confirm'] == "yes") {
 			$res = $db->exec("DELETE FROM ${DB_TABLE_PREFIX}user_attributes WHERE ID = ".$db->quote($_POST['attr_id']));
-			if ($res) {
+			if ($res !== FALSE) {
 
 ?>
 
diff --git a/webui/user-groups-delete.php b/webui/user-groups-delete.php
index e0e99abbd8e6a7d7b42e046843d99157106f9a74..55244ece354849a75977de91ef765a05473d75c6 100644
--- a/webui/user-groups-delete.php
+++ b/webui/user-groups-delete.php
@@ -88,7 +88,7 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "delete") {
 										GroupID = ".$db->quote($_POST['group_id'])
 							);
 
-			if ($res) {
+			if ($res !== FALSE) {
 
 ?>
 
diff --git a/webui/wisp-multiuser-add.php b/webui/wisp-multiuser-add.php
index 08526f3a2c0ad104531b91def1baf976a4c34e09..2158bb1acd795e2d9b975221e198c5d372f50997 100644
--- a/webui/wisp-multiuser-add.php
+++ b/webui/wisp-multiuser-add.php
@@ -86,7 +86,7 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "insert") {
 <?php
 	#FIXME
 	# Perform checks on input
-	if (isset($_POST['num_users']) && isset($_POST['session_timeout']) && isset($_POST['data_limit']) && isset($_POST['time_limit'])) {
+	if (!empty($_POST['num_users']) && !empty($_POST['session_timeout']) && !empty($_POST['data_limit']) && !empty($_POST['time_limit'])) {
 		$db->beginTransaction();
 
 		$numberOfUsers = (int)$_POST['num_users'];
diff --git a/webui/wisp-user-delete.php b/webui/wisp-user-delete.php
index 2c23734a2a3a15810d04e096856153e4bcd12a16..2018cad47a27a1b2cabaa51bdcc564c1ce817edd 100644
--- a/webui/wisp-user-delete.php
+++ b/webui/wisp-user-delete.php
@@ -65,72 +65,64 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "delete") {
 		<div class="warning">No user selected</div>
 
 <?php
-
 	}
 # SQL Updates
 } elseif (isset($_POST['frmaction']) && $_POST['frmaction'] == "delete2") {
-
 ?>
-
 	<p class="pageheader">User Remove Results</p>
-
 <?php
-
 	if (isset($_POST['user_id'])) {
 		if (isset($_POST['confirm']) && $_POST['confirm'] == "yes") {
 			$db->beginTransaction();
 			# Delete user data
-			$userDataDeleteResult = $db->exec("DELETE FROM userdata WHERE UserID = ".$db->quote($_POST['user_id']));
-			# Delete user attributes
-			$attrDeleteResult = $db->exec("DELETE FROM user_attributes WHERE UserID = ".$db->quote($_POST['user_id']));
-			# Delete from users
-			$userDeleteResult = $db->exec("DELETE FROM users WHERE ID = ".$db->quote($_POST['user_id']));
-
-			if ($userDataDeleteResult && $attrDeleteResult && $userDeleteResult) {
+			$res = $db->exec("DELETE FROM userdata WHERE UserID = ".$db->quote($_POST['user_id']));
+			if ($res !== FALSE) {
+				# Delete user attributes
+				$res = $db->exec("DELETE FROM user_attributes WHERE UserID = ".$db->quote($_POST['user_id']));
+				if ($res !== FALSE) {
+					# Delete from users
+					$res = $db->exec("DELETE FROM users WHERE ID = ".$db->quote($_POST['user_id']));
+					if ($res !== FALSE) {
 ?>
-
-				<div class="notice">User with ID: <?php print_r($_POST['user_id']);?> deleted</div>
-
+						<div class="notice">User with ID: <?php print_r($_POST['user_id']); ?> deleted!</div>
 <?php
-
-				$db->commit();
+						$db->commit();
+					} else {
+?>
+						<div class="warning">Failed to delete user!</div>
+						<div class="warning"><?php print_r($db->errorInfo()); ?></div>
+<?php
+						$db->rollback();
+					}
+				} else {
+?>
+					<div class="warning">Failed to delete user!</div>
+					<div class="warning"><?php print_r($db->errorInfo()); ?></div>
+<?php
+					$db->rollback();
+				}
 			} else {
-
 ?>
-
-				<div class="warning">Error deleting user</div>
-				<div class="warning"><?php print_r($db->errorInfo()) ?></div>
-
+				<div class="warning">Failed to delete user!</div>
+				<div class="warning"><?php print_r($db->errorInfo()); ?></div>
 <?php
-
 				$db->rollback();
 			}
 		} else {
-
 ?>
-
 			<div class="warning">Delete user aborted</div>
-
 <?php
-
 		}
 	} else {
-
 ?>
-
 		<div class="warning">No user selected</div>
-
 <?php
-
 	}
 } else {
 
 ?>
-
 	<div class="warning">Invocation error</div>
-
 <?php
-
 }
 printFooter();
 
diff --git a/webui/wisp-user-edit.php b/webui/wisp-user-edit.php
index 1f641acba15cd1b897f6d434b2ed67ec6a090e06..5b36d8a338869393789eaa4b74597fae561f89ad 100644
--- a/webui/wisp-user-edit.php
+++ b/webui/wisp-user-edit.php
@@ -205,6 +205,12 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "edit") {
 
 <?php
 
+	$userDataResult->closeCursor();
+	$framedIPResult->closeCursor();
+	$dataLimitResult->closeCursor();
+	$timeLimitResult->closeCursor();
+	$callingStationResult->closeCursor();
+
 	} else {
 
 ?>
@@ -215,11 +221,6 @@ if (isset($_POST['frmaction']) && $_POST['frmaction'] == "edit") {
 
 	}
 
-	$userDataResult->closeCursor();
-	$framedIPResult->closeCursor();
-	$dataLimitResult->closeCursor();
-	$timeLimitResult->closeCursor();
-	$callingStationResult->closeCursor();
 
 # SQL Updates
 } elseif (isset($_POST['frmaction']) && $_POST['frmaction'] == "edit2") {