I've stumbled across some kind of glitch an I was wondering if anyone could shed light on it. Here are the symptoms... Macbook Pro 17" OSX 10.6.5 Safari 5.0.3 The whole page in Safari will go a bit insane (see pictures, glitching images change every half a second or so) whenever I click on the 'reply' text box when reading an email. As soon as the text cursor loads, glitch out. Interesting symptoms are that this happens sporadically, 3 times in 3 months, and although it recurs after refreshing the page, restarting Safari, or restarting the computer, it passes with time. Also interesting, when I went to take a full screen screenshot (alt+cmd+3) the computer produced a fully black image (makes a convenient black background incidentally) although when taking a partial screenshot (alt+cmd+4) it works fine. I'm bemused and frustrated. No problems with Firefox.