External links are made to look like part of my site

[valdet]

Hi all,

I am having a rather strange issue with external links posted in my threads.

I will kindly ask if anyone had the same issue with external links ?
Here's my problem.

When a forum user posts a link with no http:// and with no www (e.g. just vbulletin.org ), then this link will become like a part of my site in the shape of http://www.mysite.com/forum/vbulletin.org which is obviously reported as a 404.

Here's an example link to see it in actionhttp://www.insurance-forums.net/forum/insurance-websites/has-anyone-built-facebook-page-their-business-t31088.html#post388403

See the facebook and the other URL how they're linked

There are no problems when links are, for example posted as www.vbulletin.org or http://www.vbulletin.org or any other shape, it's just that when there's no prefix (http and www) the links are rewritten wrongly as above.

I have vBSEO so I completely disabled it, I disabled hooks, renamed htaccess and this behaviour keeps happening.

I hope someone can help me on this strange issue if ever encountered something similar.

Thanks.
Val.