Hi, If anyone knows why Lion 10.7.4 swaps to the HD in the following conditions, please let me know: 24gb RAM in Mac Pro 2009 Right after boot, I load a large sample library template and watch the memory usage take off in Activity Monitor. It stops at 6.48 Free (green) and 17.51 Used. Towards the end of the loading time, I get Page Outs = 52kb and Swap Used = 1.3mb. I then load Cubase. It stops at 6.07 Free and 17.92 Used, with Page Outs = 205kb and Swap Used = 5mb. Further work in Cubase doesn't result in any swapping at all. Out of curiosity, why is OS X swapping to the HD when it has more than 6gb of free RAM? Thanks.