Whoaaaaa .... step on the brakes.
CPanel, MYSQL, VBulletin, WTF?
Wenkman, this sounds like malware that's affecting your computer. Do you have an anti-virus product installed on your machine? Is your anti-virus (AV) up to date? What operating system are you using? What browser are you using? Can you get to this site? http://housecall.trendmicro.com/
Downloading from our site. Because we are a file repository and we've served over 4 million files to the public file corruption is a real fact. We minimize rogue files by monitoring who uploads them, file type, scanning all our files nightly for changes or corruption and upon upload. Now this will never guarantee that it's impossible to have unhealthy files here, but it makes it pretty hard to do so. Most of our files are not executable or delivered with installers. Those that are in the form of .exe or .msi files should be scanned locally on your machine before, to make doubly sure, installing (which most AV products do by default).