problems with ghc-5.02 Socket module (SunOS)

[Johannes Waldmann]

what am I doing wrong? it worked before ... this program

module Main (main) where
import IO
import Socket
main = do
     h <- connectTo "theopc.informatik.uni-leipzig.de" 
		    ( PortNumber $ 9999 )
     putStrLn "connected"
     hClose h

results in

Fail: invalid argument
Action: getSocketOption
Reason: Invalid argument

even though there IS a listener on the socket
(other programs can connect to it).

I have ghc-5.02 (binary package for SunOS)
Any hints appreciated. how to find out what is invalid?
-- 
-- Johannes Waldmann ---- http://www.informatik.uni-leipzig.de/~joe/ --
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