Comment 17 for bug 490935

> consider the .msf files not as part of the archive content
> but just as temporary index files.
>
> In addition, the msf files are automatically rebuilt each time my mozilla
> browser crashes

Good points, but IMO:
- mails should not be altered
- comments are not part of the mail and do not belong into the mbox

So we'd need to put the comments into the msf (with the above problems) or we'd
need another file for the comments (which isn't desirable for performance reasons).

Since the msf problems are actually "just" bugs, I'm still in favor of that
solution - it would delay this bug until after resolving them, though.