[support] Why doesn't Drupal sees the "files" folder?

[dondi_2006]

You wrote:
> The files directory should be under where Drupal is installed.  Vis, at the  same level as the sites, database, modules, and themes directories.
> 
> (I think you're supposed to be able to get it to work
> inside a site/something/ directory, but I've never actually gotten it to work. <g>)

Oh, so it isn't just me to find it just natural that, as
you can/ should have per site settings, themes, etc...
you should also have separate "files" folders...

So, is this some bug that keeps being ignored in
Drupal development, or is it only thoroughly undocumented?
Is there really no way to have separate files folders, one
for each virtual site?

Thanks,
D.