I hate to hijack this thread, but does anyone know a good way of cleaning these (internally)? I'm pretty sure mine has a good dust build up somewhere around the fan, its making a humming noise. I mean, its not crazy loud, but loud enough that it does get distracting sometimes if there isn't background noise to tune it out. I know there are a few threads about them, but I don't really know all about doing the thermal paste and stuff inside of them. I don't know the history of the machine but I assume its been opened at least once since the internal RAM slot was upgraded. Is that fan noise relatively normal or should it be more quieter? :-/