[Bug-AUCTeX] Frame height grows smaller when entering an auctex buffer

[Stijn Vansummeren]

Whenever I use the minibuffer in an auctex buffer (e.g. to compile or view a 
file),  the frame height shrinks by approximately one line. (I'm using emacs in 
a graphical KDE environment; see below for more specifics.)

The same happens if I switch from another buffer to an auctex buffer (by means 
of C-x b); or simply move to the minibuffer and back to the auctex buffer 
without actually performing a command.

I'm not a 100% sure that this is indeed an AucTeX bug. However, I have 
reproduced this behavior even when my .emacs file is not loaded, and when 
auctex was the only non-standard package installed. 

Is there perhaps a hook run on entering an auctex buffer that may cause this 
kind of behavior?

I'm running Auctex 11.84 on KUbuntu 9.04 with GNU Emacs 23.0.91.1 (i486-pc-
linux-gnu, GTK+ Version 2.16.0) of 2009-04-05, modified by Debian.

I'd appreciate any help you may be able to give, as this behavior is making it 
impossible for me to edit tex files using emacs.

Sincerely,
--Stijn Vansummeren