I'm on PR1.2 and stuck on 0%. I guess the servers are hammered too hard. This also makes the Store unusable, and I cannot uninstall programs for some reason. Probably because apt-get is stuck, and/or a lock file is not removed. I think rebooting solves this issue.

But for the apt-get update issue, I guess we just have to wait till folks have finished updating to PR1.2?