I've had mine 3.5 weeks and love it. It runs a bit hot, especially in XP, but not so much that it's unusable. I haven't noticed any whining. It moos under moderate load (again, more often under XP), but so do most of the Windows laptops I've used, so I'm used to it. No discoloration yet. I've never noticed any issue with "sharp edges."
Great screen, good performance (encodes MP3s faster than a 3.2GHz P4), good wireless reception, dual boot, Front Row, digital audio, innovative trackpad controls... no serious complaints here.