Minification - Checking files stuck

Hi there,

the Hummingbird minification is stuck at Checking files "test in progress". It just stays there and does nothing (most likely). The test has been running for half an hour.

Is it normal for the humming bird to take its time (the css minification kind a broke the UI and now I need to tweak the minification) or is it stuck for real?

I've granted support access to my site.