Screwed up my fontifying

Hello,

I somehow managed to screw up my fontifying: Sometimes, if I open a file, 
xemacs starts to fontify all buffers, not just the new opened one... This 
can take quite a long time.

I didn't find the correct settings (fontify buffer when it is opened). 
Could you give me a quick hint ?

Thanks,

Markus Grunwald
Softwareentwicklung

PRÜFTECHNIK Condition Monitoring GmbH
Oskar-Messter-Straße 19-21
85737 Ismaning
www.pruftechnik.com
Tel: +49 (0)89 99616177
Fax: +49 (0)89 99616200