I just registered on a 242 installation via IE. Back on Firefox (as admin) I gave the Basic Users group a visible link to the back office. On IE (as the new guy with no actual blogging permission) I went to the dashboard and got a notice about undefined text. The notice repeats on all the pages "me using IE" is allowed to see with my tiny little permissions.

Notice: Undefined index: text in /path_duh/skins_adm/_adminUI_general.class.php on line 762

That line is part of function get_html_menu_entries and goes like this:

if( isset($loop_details['name']) )
{
	$anchor .= ' name="'.$loop_details['name'].'"';
}

$anchor .= '>'.format_to_output( $loop_details['text'], 'htmlbody' )."</a>"; // this is line 762

if( $loop_key == $selected )

I then used Firefox (as The Admin) to give the Basic Users group "Member" status in the only blog that exists, but the notice persists for "me as noob using IE". Dunno if this is IE-only as I tend to not log out because when I do I have to tell it I forgot my password - doh!