Its gremlins. I was a computer geek way back before windows when batch files were king, then somehow ended up in med school and got away from that. But I had a few programming jobs and managed some databases before every business had an IT department, and when we had those mystery crashes, I blamed it on gremlins. There was a scene in the movie Gremlins, an old drunk with a tractor is all I remember, while downing his tonic he rambled about gremlins or ghosts in the machines. Thats what causes those mystery crashes, gremlins. I remember sitting in an assembler language class, thinking how many layers beyond assembler language was something like COBOL or Fortran. However many layers that was, there are exponentially more layers between the simplest machine language to whatever the progamming platform is now. Now we have those gremlins gone bad, scrambling a registry value here or there, and watching it rise up through the platforms, and growing exponentially until it succeeds in crashing something. Or maybe you just f#%ked up.