Space Shuttle Launch Scrubbed

The first NASA space shuttle launch in 2 1/2 years, when the Columbia was lost, was cancelled today with only about a couple hours left on the ticker. A faulty fuel gauge on Discovery was reading empty when it should've been full. So now it's been postponed to Monday at soonest. This seems to be a problem all along, they already spent a lot of time on repairing damaged tiles as to not have a repeat of the Columdbia disaster.