[Xcb] [BUG] iceweasel (debian's firefox) hungs on shutdown in libxcb1

[Clemens Eisserer]

Hi,

> This looks like a bug in Qt, to me. The QPixmap destructor is firing
> after the connection has been closed, I think. I'm surprised the result
> is a hang, but I'm not surprised that things go wrong.
>
> I've seen this sort of bug in Qt before, but I thought it had been
> fixed. Perhaps it's a problem with the "oxygen" theme specifically?
I've seen things like this before with Amarok (KDE's music player),
crashing when closing the application.

- Clemens