http://bugs.winehq.org/show_bug.cgi?id=14656
--- Comment #3 from Hans Leidekker hans@it.vu.nl 2008-07-27 09:54:28 --- I played with this app for a bit and it looks as if DNS is flaky for voipdiscount.com. Please try with this line added to your /etc/hosts file:
194.120.0.223 client.voipdiscount.com
Does that change anything?