One thing to watch about 1.5j is that upper and lower case addresses NO LONGER
get converted. This is  both a blessing for those of us who  have to deal with
Unix userids and a curse because Internet addresses commonly are mixed case in
Weird places.  Thus, if you have  a Send =  Editor list with an  all uppercase
Internet address, things  will start bouncing like the  proverbial "Red Rubber
Ball".
 
You'll probably want to watch your console  logs for the first few weeks after
installing 1.5j to catch such bounces.