Here's a 2-day chart. It's live and delayed so it will keep changing during the day.

http://bigcharts.marketwatch.com/advchart/fra...p;state=11

Look at the long periods of time with no trades, and then wham, big big big volume.

And then there are some teeny trades that are so small they don't even show up on the volume section.

It's been doing this for a couple days now but today is even more extreme than it's been.