[coleman]

I've never figured out why that happens, but I've noticed it happens on every single book I convert. Even with multiple conversions running, each one will appear to hang at 67%. I've been assuming that the progress bar is more like points in the conversion progress, rather then amount through any given book being converted (i.e. if the conversion process is 9 steps, step 6 is particularly intensive. Because typically, once it decides to get past 67%, it essentially finishes instantly after that.

It's good to know someone else sees that behavior, I'm running Calibre in a VM with considerable resources(for a VM that pretty much just runs Calibre and a couple other things) and have always been puzzled by that but never figured out what it was.

Edit:
Oh look, now that I read the whole thread carefully, I see someone points out it's steps. Fail on my part there!