Problems with Social theme v 1.2.4

When I log in and out, and hitting the button to do so, all I get is a blank page that says "301PermMove", nothing more.

Additionally, occasionally when I arrive at my page, I do not have to sign in, I'm already logged in, and this is after I have cleared all cache from my browser. I have also had visitors tell me the same.

Lastly, sometimes I have to log in 3 or 4 times before the site actually logs me in.

Any thoughts anyone?