I have just order a 2Gb kit from crucial to upgrade my mini since it's been feeling a little sluggish lately. Since i'm popping the lid i was wondering if i would get much of a boost upgrading the stock disk to a 120Gb 5400 rpm? I don't need the space since i run all my storage externally it's just the performance boost of going 4500rpm - 5400rpm i fancy (since i'm used to using my wifes g5 2.1ghz downstairs). Has anyone else done similar ?