I mined around 400 on win 7 with i5 3570k oc'ed to 4.5Ghz
I was even late to party and running it in a sandbox for a few hours
So windows mining was differently possible
I think the biggest problem was/is network latency.
You can have a SUPER fast computer, but if your net is slow with high latency you will never get those solved blocks accepted since someone with better network latency already got their block accepted before you..
It certainly was possible to mine on windows. I for one was mining fine on this terrible OS.
However one of my friends was not (as I've said in another thread). So, it seems some small fraction of people have got pissed of because some kind of bug or incompatibility with some version of windows.
Who knows...
Like I said... no point crying over spilled milk--- Oh, look another altcoin has just launched!