I have a 2009 Mac Pro, and I increased RAM from 500 MB to 32 GB (1066 MHz DDR3). However, I have not noticed any appreciable difference in the speed of any applications. For example, when I have several software programs open, or several browser tabs open, I may even experience Mac's so-called "spinning beach ball of death." Shouldn't the increase of RAM to 32 GB help with these kind of slow down issues? Or is the problem that the 2009 Mac Pro can only benefit from so much RAM, and after that increased RAM is not effective? Thanks for any tips.