Frustrated. Traffic drop after upgrade?

I have just upgraded to 2.7. I was waiting until the developer of the custom template I use upgraded their stuff to make it work.

I have noticed an immediate drop in traffic, to the tune of 75% after the upgrade. And when I go to the tracking of the site (Statcounter) all I see, oddly, is the everyone that comes to my page lands on the front page, and NEVER any other pages that might be the result of some kind of seo search result; link/trackback to one of my articles; or any other inbound like such as Digg, etc……

Any ideas what is happening????

PLEASE if you have an idea email me direct at RBphoto@wavecable.com?