http://bugs.winehq.org/show_bug.cgi?id=7514
------- Additional Comments From blin@gmx.net 2007-05-04 13:16 ------- I've seen this happen when running a vpn client, with no connection to the remote network. Well, at least I think it's something similar.
A strace log would be helpful, as well as your /etc/nsswitch settings.