So recently my macbook has been slowing down to a complete crawl. Copying files, opening windows, minimizing windows, opening menus, playing movies (can't even play 720p anymore without vlc crashing), switching between workspaces. Just about anything I try to do brings up the spinny flower power wheel. I just did a complete factory restore which made it SLIGHTLY more responsive but it's still unbearable. Im running Snow Leopard so it's not the mountain/lion thing. Ran a hardware test today in AHT and it reported no errors. Disk util reports nothing wrong with the drive. Clearly there's a hardware problem but what could it be? Cable glitch or something? Around the time this started I had been using my macbook turned sideways (to read long texts). Around the time this started happening I had a loud inconsistent CLICK inside the machine that I could actually feel when holding my hand on the machine. The click went away after a few weeks. I was sure my harddrive was failing but wouldn't AHT/diskutil pick this up? I should mention the problem isn't consistent but about 70% of the system runs about as smoothly as a 10 year old install of windows 95 and it requires constant reboots. Oh, also somtimes the monitor goes black when I bump the laptop into something when moving it about. Any ideas?