So an interesting thing happened to me today on my MacBook Pro running Snow Leopard. I was on Safari (Yahoo! Finance, nothing sketchy) and suddenly heard an acoustic guitar sound coming from my computer. I thought, well that's strange, so I closed Safari, and iTunes, and then every other application possible. And although nothing was shown to be running in the Force Quit dialog box except for Finder, there was an endless 15-20 second acoustic guitar loop running on my computer. It was nothing I had ever heard, and I do not have a file similar to it in my iTunes or GarageBand libraries. I sat in awe for at least 10 mins, but simply could not figure out where this audio loop was coming from. But that's not all. Maybe 20 minutes in, several notification boxes started popping up saying various fonts were being modified, and one alerting me that a crucial font to the Mac notifications was being disabled, although neither Safari or any program was open that could be doing this. Very confused, I did some quick searches online and found nothing that could explain this phenomenon. I found a free McAfee virus scan for macs, which shortly found a few files that said it was denied access to scan. These were: .fseventsd, .hotfile, .spotlight-V100, and sparkle.framework. As the scan was going, and random fonts were being "modified," my computer froze up and Finder became unresponsive. Meanwhile, this phantom, sourceless guitar music continued to play. So I did a hard reboot holding down the power button, and when it came back on everything seemed fine. These flagged files normally wouldn't have concerned me as I know they might be protected system files, but when I scanned again after the reboot, they were no longer flagged. So at this point i'm fairly concerned; hack or virus...? Long story short, I took it into the local Apple store where about 6 employees were perplexed and had never heard of anything like this happening before. They found that all but 5 of my fonts had been deleted, and so reinstalled Snow Leopard to restore the fonts. I don't use any P2P software and have never downloaded torrents, this all randomly started happening while I was reading a finance article. It happened while I was on a wireless network here at my college dorm. Sorry for the novel, but any ideas? or similar stories?