[Bug 87027] horrible performance in feisty

[James Troup]

Public bug reported:

There seems to have been a performance regression in feisty's VTE.  My
working setup is to have several fullscreen (1280x800) gnome-terminals
on 3 virtuial desktops and switch between them.  This worked fine in
dapper+edgy but when I upgraded to feisty I started to see a visible
(i.e. 1-2 second) lag when switching between desktops.  xterm doesn't
appear to have this problem and after reading 85575, I decided to try
downgrading libvte* back to edgy.  Unfortunately (?) that 'fixed' the
problem.

** Affects: vte (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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horrible performance in feisty
https://launchpad.net/bugs/87027