Off the top of my head, I can’t remember where/if that used to go anywhere different.  Can anyone else comment?  Might be a new bug.
		
	 
	
	
	
 
		
			
	
	
		
		I am not sure if this is the proper way to do this, but to fix this problem, I changed the code in the bp-core-adminbar.php on the following lines from:
echo '<li id="bp-adminbar-notifications-menu"><a href="' . $bp->loggedin_user->domain . '/">';
to
echo '<li id="bp-adminbar-notifications-menu"><a href="' . $bp->loggedin_user->domain . 'messages/">';
Hope this works for others who might have had this problem
Cheers
Chew