Windows 8.1
I7 3770
32gb ram
Gtx650 video card
The machine is no slouch and 10 or 11 months old. Again, no errors, issues, malware, viruses...I was able to briefly see the website and server in minecraft by adding "www." In the front, but that only worked for about a minute, then connection refused again.
The only thing i can think of is server side issues of some kind.