CCL 1.2 and portable allegroserve - can't restart server

Hello,

I'm running CCL 1.2-r10552 PPC 32 and the latest CVS portableaserve
(pretty old).
This is on a G5 Mac with OS X 10.4.11

I find that I can't restart the server. The first start works fine,
but the subsequent ones freeze.

eg:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(net.aserve:start :port 8000)
;; server works OK

(net.aserve:shutdown)
;; server stopped OK - no connections accepted

(net.aserve:start :port 8000)
;; server now accepting connections, but the connection freezes
;; no log output appears.  A restarted server never works.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

I'm a bit stuck. Is anyone else using portable aserve?  Has anyone had
success?  Or is
there an updated version of aserve somewhere?  The aserve mail list
is all spam, alas.

Many thanks,
Jan