It could just be location dependent. Anyway, almost everytime Starhub claims they were doing maintenance during those times, me (as well as many of my Starhub using friends) have experienced slow speeds throughout those days which were mentioned for maintenance. I'm used to it already.
The actual site isn't down. Just the image server Yahoo uses to serve the photos. And the "MaxOffline" comment isn't warranted. Singnet also has its off days. No ISP is perfect.