Hiya - I'm on winXP using Firefox 19 and consistently I've seen Google Analytics thrashing my TORC session.
It sets it into a long, long refresh cycle requiring me to manally stop the refresh (it's slowing down the browser performace as a whole, I've noticed) - and that doesn't seem right to me.
Just thought I'd mention it; the GA configurations may need a tweak?
~B
I'll take a screen shot of the info bar at the end of the session page when I can, and post it here if that'll be of help...