I have a mac PRO WITH os X 10.6.6. The pas few days, it is taking much longer to come up and after it comes up, it get the spinning circle and that goes on for a long time. After that it seems to be running Ok, but not great. After the boot up and log in the circle goes on for maybe 10-15 minutes. I am from the PC word. So, is there a check disk function that I can check or can I remove start-up options. I have 4 GB memory. core 2 2.8 GHZ , and the laptop is about 8 months old.