log in problem

[guybr]

Hi, I'm using VM 2.6.6 (and Joomla 2.5.20) and I've come across an odd problem loging in: if I try to place a product in the cart, I can login fine from there. But if I try to login via the link in the blue joomla-navbar, the following long URL appears and I get a "page cannot be displayed" error. Strangely, it does log me in - but why do I get the page display error?

http://mysite.com/MyVM+JoomlaSubdirectory/using-joomla/extensions/components/users-component/user-profile/

I noticed that the url doesn't begin with www.mysite - could that be a reason?