Bomb threat at Moscone

Well, I was sitting next to Ross Mayfield and across from Tim Bray in the speaker’s lounge at Seybold when they told us that a bomb threat had been called in to Moscone North and South (where the Oracle conference is taking place) so just to be safe they asked us to evacuate Moscone West (where Seybold SF is taking place). I got out of the area. It’s 9/10 after all. And just now (a few hours later), I was driving up Market warchalking and just found an open wifi relay around Market and 16th-ish. (I pulled over to check my email and post this entry).
UPDATE:Sam Ruby asks if the threat was called in at 1:30 and warned of an explosion within an hour, why were we not evacuated until just after 3:00?