Hi, I've been using my mac smoothly for 14 months. But until recently it has been acting very weird. Here's the sequence of events: 1. Parts of the track pad stopped working (I can only use the bottom half) I restarted the computer. 2. Then the cursor jumps around (even with a mouse) 3. It starts clicking and right clicking on its own I freaked out, so I ran a software update, and managed to use Disk Utility to verify and repair disks then restart. 4. The track pad seems to be working better (but a little jumpy at times), BUT all the basic icons are gone (e.g. Applications folder and downloads folder becomes a "?" while other folders on the desktop appear invisible) 5. I went to CandyBar (an icon modification app). But under "General Icons", there isn't even anything to replace. Like usually there'll be the normal default icon, so I can simply drag and drop a modified icon over it. 6. The cursor is jumpy again, it keeps selecting stuff and clicking stuff. Background: Macbook Pro 13" Version 10.6.8 Snow Leopard. Processor: 2.4 GHz Intel Core 2 Duo. Memory: 4 GB 1067 MHz DDR3. I recently installed a torrent app called frostwire. It doesn't seem safe, considering the last I downloaded limewire on my PC, it gave me a bunch of nasty viruses. Could this be a virus issue? Please help!