FORM based authentication LOGOUT

[John McPeek]

Hi,
I have written a JAAS LoginModule and use it with FORM based 
authentication. Everything works fine, except I can't figure out how to 
log a user out. I have tried to invalidate the session and get a new 
one. No Dice. I did a search on the source and didn't find much. There 
are articles on the net from around the time  servlet 2.4 came out 
talking about a logout() method. However, when I look in the servlet 
javadocs there is nothing of the sort. Someone please tell me there is 
an answer to this.

Thanks
John McPeek