Trailing Slash Problem

... caused by add-on domain

[michael heraghty]

I am hosting several sites on the same hosting space, using the "addon domains" service provided by the host.

Recently, I have noticed a problem with certain URLs (I'm convinced this only started happening in the last month or so, else I'm sure I would have noticed it -- but that's not the issue).

Let's say my domain is called foo.com. When I create a new add-on domain, let's say bar.com, the control panel automatically does the following:

1. It creates a subdirectory -- www.foo.com/bar/
2. It creates a subdomain -- bar.foo.com
3. It creates a main domain -- www.bar.com

All three resolve to the same website (presumably the control panel does some mod rewriting on the fly?). As far as my site visitors are concerned, I only want them to see the #3 address. This solution works fine...

... or, it did, until I recently noticed that if the user types www.bar.com/subdirectory -- without the trailing slash -- then the domain name automatically switches to foo.bar.com/subdirectory/

Is there any way to fix this so that the user doesn't see any mention of "foo", even if he leaves out the trailing slash on a directory name?

I should point out that I am a novice - I understand basically what a .htaccess file is, and how to create one, but that's about it!

Any help would be greatly appreciated...