SSH connection hanging on logout

[Daniel David Benson]

I am running OpenSSH 2.9p1 on SunOS 5.7 w/4-24-2001 patch cluster.
Like many other users I am seeing the hanging session on logout
with background processes.  This is a huge problem for me as 
I centrally manage 50+ machines with rdist across ssh.  
Instead of just complaining about the problem I thought I would 
put my CS degree to use and try to track down the problem myself.  
For starters, though, can someone point me in the right direction?
Also, is there a code rodemap for OpenSSH?

Thanks!

-Dan