https://bugs.winehq.org/show_bug.cgi?id=37267
--- Comment #2 from Sergio Callegari scallegari@arces.unibo.it --- I still occasionally see this after having upgraded to another ubuntu release (utopic). My feeling is that it has to do with the network.
If I upgrade wine on a system with no network or on a system with a good network, I see no hang. If I upgrade on a system with a bad network, the update of the wine configuration hangs.
As a workaround I am detaching the network before launching wine after the package upgrades and it seems to work.