Well I downloaded Photoshop CS5 three days ago and have given a few things a go that I was excited to see like Content Aware Fill.
I am yet to give it a real good go but so far there are a few things I have found. Firstly I currently use a 24 inch Imac running 4GB RAM on a 2.66 GHz Intel Core 2 Duo on Leopard.
Content Aware Fill (CAF) errors out when filling in a small amount of white space around a 350MB @ 240 dpi stitch saying I’m out of RAM (I let photoshop use 3 gig of my 4 gig ram). To get it to work I have to drop my stitch down in pixel size. When using the magic want tool to select white space with CAF it works best if you add overlapping pixels or you get an harsh blend. CAF takes ages to be applied to an image. When CAF is applied to a shot to fill in white space the blending is hit and miss and when it works I personally don’t think it is print quality. The application works great for repairing certain parts of shots and defects.
Overall I find CS5 runs a lot slower compared to CS4. Photoshop and Bridge working together is also slower. Over the coming days I will have a more in depth play with CS5 and see how it goes and get back to you. Would love to hear some other peoples thoughts and experience on CAF and also the speed of CS5 on your system.