Hi everyone, I hope someone can help me with this question. I have the most recent version of Safari on Leopard and I recently noticed that every once in a while, out of the blue, a small window will pop up on the top left hand corner of my screen while Safari is open but it will pop up and disappear in literally less than half a second. I don't know what it says or anything and I have the block pop-ups enabled in Safari. I haven't visited any sites that might put a virus on my computer (I hope) and aside from making me annoyed, the sudden pop up hasn't slowed down my macbook or done anything else. Has anyone else had this experience? Do you know what the sudden pop up could be? Thanks!