After upgrading Hudson from 1.377 to 1.382, my jobs do not start to build. If I trigger a build, it is shown as building, with a progress bar, but it never finishes or even begins to do anything. If I try to view the console output, the page does not load. In a matrix job, the sub-job is never started. Trying to cancel the job with the cancel button next to the progress indicator has no effect.

Downgrading fixes the issue.