hanging ssh connections (still)

[Rob Hagopian]

Using the latest snapshot, I'm still getting periodic ssh sessions hanging
after they've completed. It used to be very common, but the prior fixes
reduced the frequency to about one hung per day (out of thousands). These
don't timeout at any point, they'll hang around for days if not killed
manually (blocking the scripts from continuing).

The commands ssh is hanging on are nothing but simple shell scripts on
FreeBSD 3.5 (the shell for the account is tcsh, the scripts use sh).

I'm not sure how to go about providing more information as it's not
practical to run sshd in debug mode every time. I'd be happy to try
anything out though...
								-Rob