pidgin and VPN issues.

[Ethan Blanton]

Matthias Apitz spake unto us the following wisdom:
> IMHO this sounds like established TCP connections are terminated by the
> VPN down/change and some layer in pidgin is waiting (for ever) for a
> response. One could watch with TCPDUMP if this is true.

All of our network I/O should be nonblocking, and thus should not
affect the UI.  This is more likely a logic bug of some kind, as Mark
noted.

Ethan