Ive been slowly adding programs to my UMBP. Office, Lightroom, Photomatix, F.C.E. Everything been perfect. Yesterday, I Installed Bootcamp and Fusion everything seemed OK. Fusions kind of clunky, but that's just opinion I guess. Then last night I did six programs from the CS3 master suite. Installation froze halfway through the first disc. I had to start over. I DIDN'T uninstall, restart and install fresh. I just overwrote what was there. Those programs took like three hours to install. I tested them, they all open and work fine. But this morning, my laptop seems a little off somehow, start-up takes just a hair longer. Its almost acting like its catching up to itself. I click on something and just takes a fraction of a second to respond. I checked the activity monitor and I noticed that a few programs are freezing on opening, like calculator and iphoto. Iphoto is maxing out the processors for some reason and calculator is just not responding. Everything else seems to work fine. So the questions are: Is it normal for macs to slow down a hair after you load it down with programs? it is for PC's. Should I reformat and use my time machine backup from yesterday BEFORE the bootcamp and adobe installations, and just reinstall without any errors? I'm worried that first failed adobe installation may have messed the OS up somehow.