[slim-vim] Do others see this callback bug?

[Brad Beveridge]

In the past Slim-vim has (for me) very occasionally not called the
callback from Swank until a key is pressed.  Ie, what happens is you
type something at the REPL and hit enter (or \x on a form), and
instead of immediately returning the answer, nothing happens.  Then
you press a key and the return from Swank happens, the callback to
SLIME:DISPATCH happens, and you get your result.

For some reason, I noticed last night that this is now happening to me
ALL the time.  Does anybody else have this bug?  If so, is it recent?
(ie, my last push?)
It appears that in os_unix:4799 that select is not returning when it
gets input from the Swank socket.  If there are any socket programming
gurus, I would appreciate you taking a look at the code in this area
to see if what we are doing is sane.
I'm gonna read select tutorials today :)

Cheers
Brad