profile: reported times off from visualized bars?

Q#2223
Fragment 0
Worker 36
around time = 1s 778ms 083763ns

![screen shot 2014-04-09 at 4 18 51 pm](https://cloud.githubusercontent.com/assets/526415/2662451/9773ea04-c03d-11e3-88f3-9956ca3c4c01.png)

The highlighted bar, `V0`, says it takes `3.82e+5ns`.

The bar to its left, `V5`, says it takes `1.21e+5ns`.

This difference is way bigger than a factor of 3. I wonder if maybe times are wrong?