First things First: 12 inch powerbook 1 ghz processor 512 ram 10.4.8 Recently i noticed that some of my apps weren't as responsive as they had been in the past, I definitely need to upgrade the ram at some point. Just to make sure there wasn't anything wrong with my internal drive i ran disk utility. I selected verify disk and then the whole system locked up, forcing me to shut down and reboot. I have tried running "verify disk" two more times and each time it ends with the same result. Does anyone have any idea of what's going on? For the most part my system runs fine (except for the slow down) but a service from disk utility locking up my system has me worried.