Hi guys. I own the high-end iMac 21.5 for about 10 months now. Absoloutley no problems with it until yesterday, when everything slowed down as I did tasks like browse firefox and even getting the beachball from just going to the dashboard. Im not a heavy user, I just web surf, and watch videos etc ..... I thought this would correct itself by restarting my machine, but the iMac took within 5 mins to load up (previous day and within the last 10 months it only took 1 min), and the sound from the harddrive looked as if it doing overtime. I checked the activity monitor and results below. Seems data writtern/read is working a fair bit. Does anyone know what might be the cause of this? (im running lion).