I've experienced the same "thing" while testing, and a lot of other ppl. have also had much headache about this file. Maybe the eZ-crew can do some testing here, give us feedback and state if the file is working, if we are doing something wrong, or if it's a conflict somewhere...
Hi,
after some more testing, my assumption:
The error, that i experienced was NOT the 403, but a 500, which says, that my server may be misconfigured.
So, i guess, the provided file needs some "Override Priviliges" in the Virtual Host, that is used to Host the domain.
Cause the .htaccess file wants to alter some settings for this directory and in order to do this, it needs the rights from "it's" Virtual Host and I guess, that this is not true for me.
I commented out all lines (-> Server worked) and removed the comments individually to find out, which lines causes the error.... To no avail: As soon as one line got into effect, i got the "500" error. We need some Apache Expert ;)