It seems to happen completely randomly, but if there is anything that mightbe related it could be gmail. Of course, gmail is the site I use most frequently, so it's impossible to tell. I think it was in gmail that I first encountered the problem, though, since then it's happened on some other random sites too. I use the latest version of OSX, and Safari, and I wouldn't know where to begin to hack anything but weeds in the yard. 😉 It sounds like this is just one of those thins, and I'll have to learn to live with it or find a less attractive but lower maintenence web browser!