This is really wierd! I originally had 512-MB on the 17" PB. Last Christmas, I decided to get a "bump" in performance, and purchased a 1-GB module from Crucial, so now I've got a total of 1.5-GB (obviously). Unfortunately, after using iMovie/iDVD/iPhoto/PhotoShop, I can't honestly say I've noticed THAT much of a difference in power/performance... is the PB somehow rejecting the extra memory boost? (I checked 'my computer info...', and it reads 1.5 GB, so I guess not...) What's going on? I kind of feel like adding the memory was a waste of $$$$... maybe am I not using the memory to the full potential, so that's why? But the thing is... even when using Safari/Microsoft Word/iTunes, I STILL get the STUPID SPINNING BEACHBALL! What is going on?? Some advice would be appreciated, thanks!