Pretty sure most of it was phantom reports by butt hurt PS fanboys honestly.

No one I know had any problems and I logged on/off myself at least half a dozen times yesterday with no problems whatsoever. There was a Xbox Live service alert yesterday, but there's been service alerts for the past several weeks. The weird thing is that I've been having issues with achievements unlocking. I'll meet the requirement, and it'll say "100%" complete, but it'll still be locked. Usually a few hours later it'll just randomly unlock.

This all started around the time they were integrating Xbox One stuff with xbox.com, so I figure that probably has something to do with it.