Yep, that's right.

If it's not clear, I'd appreciate any suggestions you've got on language. A graph showing the busy times and current queue sizes is available:

http://badger.bleb.org/mrtg/vidconvert.html

The average queue size is 2, so 16's quite high!

Note also that the number is the size of the queue, not your position in it: so if the number goes up, don't worry, you're still moving towards the head.