I guess I posted in the wrong thread, as just found this one that is more applicable.
I had difficulty (extreme slow download) from Main Server yesterday and continuing same this morning. Also tried a local mirror and no different. So wondered if it was my wifi or internet connection, but they test OK.
Now see it is an upstream server issue, so Im relieved, but unhappy. I hope "normal service will be is resumed as soon as possible", as they say. For today at least, not worth trying to do any Software Update, just let the servers sort themselves out.