Undefined index Anti Splog

Ran Wp in debug mode to try and figure out some issues.. Can you tell me what this is

Here is the line it is referring to

When anti splog is activated by itself and no other plugins i get
Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead. in /home/username/public_html/wp-includes/functions.php on line 3466

Anti Splog
line 579 if (strpos($_SERVER['HTTP_REFERER'], '?page=ust&tab=splogs'))
line 53 add_filter('wp_signup_location', 'ust_wpsignup_filter');
line 76 add_action('bp_signup_validate', 'ust_signup_errorcheck_bp'); //buddypress support

Notice: Undefined index: page in /home/scott74/public_html/wp-content/plugins/wpmudev-updates/notifications.php on line 53
Notice: Undefined variable: msg in /home/scott74/public_html/wp-content/plugins/wpmudev-updates/notifications.php on line 76

Not sure also if this this why I keep showing updates when I do not have any

See errors here ---->>>>> http://imm.io/bBkq