I've noticed it on GT quite a bit. So much so that I have clicked a thread from an index page at the same instant it 'jumps' and I end up in a thread just above where I clicked (and hadn't intended to go).
I am slowly falling apart - I wish you'd take a walk in my shoes for a start. You might think it's easy being me ... Sometimes I find myself shaking - In the middle of the night. And then it hits me and I can't - Even believe this is my life
(The Wreckers; "Stand Still; Look Pretty")