I've noticed that one of my LC, (a III+) has some internal rust/corrosion https://www.dropbox.com/s/enqyhtc15yb1sn1/DSC00221.JPG https://www.dropbox.com/s/eo4x3pa9hais6f7/DSC00223.JPG What would cause this? Humidity? my other LC machines are perfect inside as far as wear & tear (I've only had them a few years and this was the first time I've opened the cases to inspect them). It also doesn't work - I get the Floppy/Question Mark screen at boot. HDD failure?