[AUCTeX] Strange extra buffer filename.tex<2>

[Torben Knudsen]

For a while I have had this small but annoying problem when using
auc-tex.  Sometimes when I am writing to a filename.tex file I
suddenly see it has changed into filename.tex<2> buffer.  This usually
happens after spell checking.  Any help is appreciated.
-- 
Associate Prof. Ph.D Torben Knudsen     Mobile  : (+45) 2787 9826
Section of Automation and Control,      Direct  : 6 8694
Department of Electronic Systems,       Email   : address@hidden   
Aalborg University 
Fredrik Bajersvej 7 
DK-9220 Aalborg Ø
Denmark