There is onfo all over the internet stating it affects IE (XP or Vista) and Firefox. Some say it is webpage or site specific, some say it is your mouse software. A friend of mine was here today and he is into computers, so I asked for an opinion- he thought that it might have something to do with a setting that is refreshing the page when you go back.
So I grabbed my laptop to show him, and it was not doing it anymore!
He left, I sat down at my desktop and it is now doing it.
I did run Spybot on the laptop before he arrived, so maybe that cleared something?
Everyone seems to agree that Google Chrome is not affected.