MySpace foe can't keep it upBrad Greenspan, the former CEO of Intermix Media, the company which launched MySpace, loves to make trouble for News Corp., the media giant he claims bought Intermix and MySpace for a song. Too bad he pays more attention to his ongoing, one-sided feud than his revenge vehicle, LiveUniverse. Greenspan's startup is having trouble with his uptime; a tipster says his LiveUniverse and LiveVideo sites have been down for two days running. That's not the real problem; the real problem is that it took two days for anyone to notice they've been down.