Hello. I noticed that after running Photoshop CS6 on my new 27 inch i7 iMac it takes up to 30 seconds to shut down the computer. This doesn't happen if I don't run Photoshop. It only takes 2/3 seconds. However if I run Photoshop, quit it, make sure that it fully quit it still takes about 20 seconds to quit. I get a gray screen with a spinning wheel (not beachball), then it finally shuts down. Anyone know what could be causing this? Thanks.