Bug in syntax highlighting

Hi folks,

the following tex file causes problems with AUCTeX when syntax highlighting is
turned on:

===begin file
\[
\label{gurke}

[peter]
\]
===end file

actually, this file alone works well, but if I now enter \end or \begin right
below the line containing \label, xemacs hangs as soon as the final letter "d"
resp. "n" is typed in. Typing C-c on the command line where xemacs was invoked
brings it back to life.

Does anyone know about this problem or how to solve it?

Thanks a lot

Dennis



Emacs  : XEmacs 21.4 (patch 15) "Security Through Obscurity" [Lucid] (i686-pc-linux, Mule) of Mon Nov 29 2004 on mathilda
Package: AUCTeX CVS-1.13 (2005-02-11)

current state:
==============
(setq
 window-system 'x
 LaTeX-version "2e"
 TeX-style-path '("style/" "auto/" "/home/dw/.TeX/style/" "/usr/share/doc/.TeX/style/"
		  "/usr/doc/.TeX/style/" "/home/dw/.TeX/auto/" "/usr/share/doc/.TeX/auto/"
		  "/usr/doc/.TeX/auto/" "/usr/local/lib/xemacs/xemacs-packages/etc/auctex/style/"
		  "/usr/local/lib/xemacs/xemacs-packages/etc/auctex/auto/")
 TeX-auto-save t
 TeX-parse-self t
 TeX-master nil
 )