Hi there, I've been working in Photoshop since 2004 and I've never seen a problem like this before. I use a Mac, now upgraded to Mavericks, with Photoshop CS3. (Yes, I know but I like CS3!) and a Wacom Intuos 3. I have 24 G of ram. Recently, when retouching in Photoshop, a small yellow square appears over the curser. It moves like/with the curser but of course, you can't retouch because you can't see what you're doing. It only affects Photoshop because if you move to Safari, email, anything else, it reverts to a curser. You have to reboot Photoshop to clear it. I really don't want to upgrade to CS6 or the CC because of the loss of picture package and the wacky crop tool, but if I have to, I will. Any thoughts? Has anyone had a similar experience? - Thanks, Heather