Hey Magnus,
Some nice work there mate. Some excellent googling.
Right S2000 Kernel Panics are almost always about hardware. Either a bad driver or bad hardware is usually the main culprit. So do not worry about software or something that some one else has installed. Chances are a re-installation will not resolve your kernel panic.
How is your ram ? Is it all purchased from Apple ? or did you buy it from a third party vendor. Please follow Magnus's macosxmemtest link, download and install the app and check your ram regardless of whether it was purchased from Apple or not.
Could you also go ahead and do a software update and see if there is an update for the Mac airport driver. If so please install.
Dan