Forum Moderators: phranque
Install something like proxomitron and watch the headers come across in response to a request. Also, reload the page and see if it uses 'last modified'.
Using touch will depend upon your server. Usually, touch will update the date under *nix. I've seen versions of apache though, that will return either inode or the creation date. You can't affect the creation date with touch unless you delete the file and recreate it.