X: post from the Macpro forums. If this is spamming,mods,feel free to remove. Dont know how widely aviable,or obvious information this is but : Apparently in photoshop cs3,there is a intresting "feature" by default. There is one file that isnt activated by default,resulting that your macs dont use more than 1GB of memory... The file is in the : Applications -> CS3 -> Plug-Ins -> Extensions -> Bigger Tiles : There is a file called Bigger Tiles.plugin. IF that file has a ~ symbol in front of it, the file is not in use and photoshop dont recognize more than 1GB of memory!!! By removing it,and restarting photoshop,things should be groovy after that.. Well,thats what the techinician at the adobe told me. I´d be intrested to hear if he was full of *****,or right. Because I went around in our studio complex,and ALL the intel macs with CS3 was borked. The problem wasnt present in older PowerPc macs or macs with CS2 >. But, if anyone has any more info about the subject,like,if the above is not true,please give me the info. Then I can get back to adobe to ream somebodys ass for being a..well..something.