I wanted to check for updates today (automatic updates disabled because I ain't need no modern bells and whistles that you modern folks use) and I noticed that the syncing was taking longer than usual. I pulled the notifications panel and discovered that the notification was saying "0 / -1 b" or "-1 / -1 b" (I'm using Droid-ify which shows more verbose progress in the notification) and it didn't change over time. I removed the repo that was failing to sync but it didn't change anything. Is there any way to fix it?

EDIT: it just started working as it did before. I guess it could be some kind of an outage in all the repos at the same time.