Ok, this might be connected to the "Extranous Cancel Button" bug,
but anyway. Jason told me to also submit it to this site, so I guess
this is where to put it (deleting the thank-yous):
At this time I see no way of canceling a incorrectly typed or non-
responding connection request other than waiting for a timeout.
Changing the button into "Cancel" and/or supporting CMD-period
would be a good thing. Changing the button (either to "Cancel" or
at least disabling it) after pressing it, would be good anyway.