Description of problem:

After choosing xfce or LXDE as my favorite desktop and logging in and
then starting gnome-terminal, I see a weird effect: gnome-terminal is
popped up in a normal size, but then the width shrinks automatically and more or few slowly to about the half width. 

This happens even width freshly created users.


Version-Release number of selected component (if applicable):
gnome-terminal-3.0.1-1.fc15.x86_64

How reproducible:


Steps to Reproduce:
1.start gnome-terminal in a xfce or lxde session
2.
3.
  
Actual results:
see description

Expected results:
the terminal size remains in its original geometry.

Additional info: