I'm bullied and these "people" have hacked my ubuntu 9.10 workstation, stolen a lawsuit from the desktop folder and fetched some emails on a SSL Gmail session. I stopped using it the same day I noticed so whatever they did it's still there. I suspect a back door and a call to a remote server, but it could be some custom rootkit/trojan. I have uploaded a gzipped image ([url removed, login to view]) of my machine to a host, you'll have to download it and install it on your own PC. Not the average job post, isn't it? I'm paying $320 only if you find something.
PS: I have an 11 yo eBay account with more than 2000 positives, no problem to use escrow. You don't have to send me detailed info until I pay but I reserve the right to double check your findings. I may have you check other ubuntu, fedora machines if you succeed finding the issues with this one.