Hmm. How long have you left it? Perhaps it is a network timing issue? Does this machine have dial-up networking or similar configured that the others don't?

If you haven't already, leave it trying to run the executable for a good 10 minutes, just in case the problem is simply something like the network name resolution hanging up somewhere.

Also, have a look for a "kixtart.log" file in your temporary directory which may give some clues.