*whimper* ... i suddenly just became aware of a strange kind of hissing sound as i was busy sitting here working at the library... as i tried to find the source of this annoyance i was shocked to find that the noise was being issued from my MBP power supply!!! naturally i promptly disconnected it, but i have since reconnected it to test it etc, and the noise is getting progressively louder, its a really loud hissing / crackling kind of sound... in short it sounds (pun) like my POWER SUPPLY IS ABOUT TO BLOW UP!!!! what do i do? help!! ... and hurry it up... i only have an hours power supply left :O!!