Org mode modifies files

[Sébastien Vauban]

Hello,

I am using the fantastically easy Org-Mode since a couple of
weeks, but encounters systematically an annoying problem: Emacs
always tells me my .org files have been modified (when I wanna
quit Emacs, or run CVS commands, ...) while they weren't changed
at all!

The only thing I did was listing my task entries with C-c a a,
that's all.

Any idea why it says they are modified?

Thanks for your help,
  Seb

-- 
Sébastien Vauban