I'm using 4.3.6
When using 1.0.0.6 FCK I was getting absolute links on internal page links.
The site concerned is a parent site, but is not the root site - http://public.qebsolutions.com
I thought that the latest release would fix issue like this - so upgraded to 1.0.0.7 (current release) on site.
I tried adding a link to page and got the linkclick style hyperlink. See on the home page a link to solutions.
This was selected from the link gallery (browse server) option which lets you choose the page concerned.
I then tried entering a specific external url - again using the link gallery page - just to see how it dealt with the link.
And I got /LinkClick.aspx?link=http%3a%2f%2fwww.qebsolutions.com&tabid=53 - see the QEB link on the same page.
If I revert back to 1.0.06 on this site - the issue returns to absolute links and doesnt use linkclick anymore.
I'm using IE7. But repeated the exercise on IE6 adding the services link - still got linkclick.