preview-LaTeX changes TeX-master

[Mathias Häbich]

Hello,

I have a problem concerning AUCTeX and preview-LaTeX:

I edit a TeX-File in PDFLaTeX/M major mode and everything
works fine, until I do a preview-at-point (C-c C-p C-p).
This somehow changes the TeX-master variable to
"~/path/to/document/_region_", so when I want to compile
and view my document via C-c C-c (TeX-command-master) I
only get to see the region I previewed.

I'm using

GNU Emacs 22.2.1 (x86_64-pc-linux-gnu, GTK+ Version 2.14.1)
of 2008-09-05 on yellow, modified by Ubuntu

together with AUCTeX 11.84 and preview-latex 11.84 on a 64 Bit
Ubuntu GNU/Linux distribution.

My problem is not severe, but really annoying, so any help is
appreciated.

Kind regards,
Mathias