So, I've done some google research and I've tried every possible solution I can think of. Here's my problem: My 1.8 GHz Intel Core Duo Macbook is going crazy with the fan. I currently have 2GB 667 MHz DDR2 SDRAM. I should have plenty of free memory to run programs simultaneously without the fan going nuts. But I can have nothing open but youtube, play one youtube video with more in the "instant queue" (or have several unopened/unloaded tabs of videos open) and the fan goes off and my mac gets really hot. Here's what I have tried: 1) Resetting the p-ram - didn't do anything. 2) Turn off mac, take out battery, hold power button for 5 seconds, put battery back in and reboot. Helped for maybe 3 days, but the fan came back. 3) I've checked for open print jobs. Nothing. I downloaded iStatPro and my fan speeds are about 6280 rpm and cpu is about 70 degrees. 4) I have checked activity monitor - Dashboardclient is the culprit IF I happen to be viewing the dashboard. Otherwise, it says Activity monitor is the culprit with 2.7% cpu. Sometimes it trades places with safari which can get about 3%. 5) I have gone into disk utility and repaired permissions. My mac is out of warranty so I can't go get a new fan unless I pay for it, but I'm not sure if it's the fan that's the problem or just part of the problem. I usually have several sites open (none are flash intensive - usually forums), or it could just be youtube or netflix with no other open applications and my fan will go crazy. Any suggestions?