URLs in posts ??

When I make a post with a link to an external site is is automatically replacing the link with a descriptive title
eg: If I make a post to www.vbulletin.com it automatically changes to vBulletin® - Instant Community

I made a sample post.. http://www.mybusinessforum.co.uk/coffee-break/12-url-test-post.html

the only thing I wrote on the page is
www.vbulletin.org
www.google.com
www.mybusinessforum.co.uk
everything else has appeared all by itself... how can I stop this?

Is this anything to do with VbSEO? I can't see a setting to change this anywhere.. and it's REALLY annoying me

thanks in adv...

All fixed... found a setting in the vbseo control panel and switched it off... grrrr

Thanks if you took a look.

Yes - that's this feature:

Add Page Titles to External Links Anchor Text?
Enable this option to create keyword-rich links by adding page titles to URLs that point to external domains. vBSEO will connect to external sites when new links are posted and extract the page title from them.
NOTE: This option works ONLY with vB 3.5.x or higher