Comment 14 for bug 1450144

There are two possibilities. Either we're getting incorrect information from ubuntu-download-manager via its 'progress' signal, or s-i is incorrectly calculating the percentage received from the data udm is giving it. Note that the 'eta' in s-i's UpdateProgress signal will always be zero.

I chatted with Caio on IRC about how to bump up logging manually in order to figure out which scenario is happening. The other thing to keep in mind is that touch is still on system-image 2.5.1. I don't think the code here has changed, but we probably want to think about backporting system-image 3.0 (available now in wily). That version at least gives us the option to bypass udm and use the built-in curl-based downloader.