I upgraded to Photoshop CS6 finally, and am enjoying it. (I actually paid for CS4 and 5 too, but changes Adobe had made to Applescript broke things enough that I kept using CS3.) One big frustrating bug I'm using in 13.0 x 64 is the screen flickering when I switch back to Photoshop with a lot of documents open. It's trying to update each window it seems, and is bring each to the forefront (or at least displaying its contents) for 1/10 of a second or so, all at once. It's going to give me a stroke if I keep viewing the files. I'm using a Mac Pro 2009 edition with ATI Radeon HD 4870 512 MB. Is there any fix or workaround?