I'm sorry if this isn't the most appropriate place to post this, but I've tried over at the Adobe forums and no one had any suggestions. About two weeks ago I noticed a very significant increase in the time it takes to save a TIFF file in Photoshop CS3. I would estimate that it now takes 3-5x longer to save a given file. I have also noticed that applying filters is taking longer than it was before too, but the difference isn't as dramatic. This is seriously lengthening my workflow, as I often open files in PS from Aperture to do editing and processing that isn't possible within Aperture itself. My system is running very well otherwise. I do maintenance with Onyx regularly, I have a fast boot drive (Raptor) running the OS & Photoshop with my home directory & image files on a fast 750 GB Caviar SE internal drive. Scratch disk is set to the 750 GB Caviar, which has 480 GB of free space on it. I'd really appreciate any ideas you might have. This is getting unbearable. Thanks.