I have similar problems today on both home and work PC's, but used another PC on a separate broadband connection at work and had no problems.
I googled this and there is one report at present referring to problems being reported globally with Hotmail access today
Yup, I'm having just the same. I'm surprised that there aren't more reports of this around yet. Anyone seen reports of this on any other PC advice sites?
By the way, I have Adblocker running on both my PC's. Don't suppose there's any connection?