Mainframe is shutting its doors.   Dont worry we werent hacked and all BTC is safe and will be paid out on the same schedule as normal.

I will write more about this when i get the time.  Sorry it was so sudden.  There was no other choice.

You can still login here via the old stats page to retreive your funds:
http://mining.mainframe.nl/stats

Once logged in you can reach most of the old site and order a manual payout, change payment addresses, etc.  This part of the site will stay up for at least 2 weeks for everyone to get their BTC out (unless the site is brought up on other servers in the meantime)

EDIT:  More information here:
https://bitcointalk.org/index.php?topic=24650.msg589039#msg589039