[ POOL CLOSED ] Mainframe Mining Cooperative

Ill leave the original post below intact for posterity but 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.
Please see this post for more detail: https://bitcointalk.org/index.php?topic=24650.msg585867#msg585867

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Hi!

Mainframe is a mining pool founded with the goal of giving something back to the developers who help make bitcoin what it is and continue to improve it.

The Mainframe Mining Cooperative is an open registration charity mining pool which gives 50% of its earnings in user set donations to open source bitcoin developers and writers. (https://github.com/Unthinkingbit/charity/blob/master/bitcoindonationinformation.html)

!!! NEW !!!
The charity features are optional! If you want to help support developers, just set a donation percentage in your "Account Details" page. You control if you want to donate and how much you want to donate.

If you just want to mine with us and not worry about the whole charity thing, just leave your donation percentage set at zero to opt-out of the charity features of this pool.
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(If you are a bitcoin open source developer or writer, you can post your information on the bitcoin donation thread (https://forum.bitcoin.org/index.php?topic=18498) to request addition to the list of developers we donate to.)

We currently have an administration fee of 0.5% and utilize a PPLNS (Pay Per Last N Shares) scoring system for a fair payout to our committed miners. This is no longer a "pool-hopper friendly" pool.

You can use the following URL to mine with us:
http://mining.mainframe.nl:8343

Website:
http://mining.mainframe.nl

Pool Features

SSL
Dedicated Redundant Servers in Private Data Center
Latest bitcoind (0.3.23) patched with multi-threading and native long polling support (low stales)
latest pushpoold (v5) with memcached and LP enabled
JSON API for worker information
Threshold and instant manual payout options
PPLNS Reward System
Long Polling
Simple and Clean interface
Server stats JSON API (available at http://mining.mainframe.nl/api )

NOTE: If you are unable to post in this forum please check out this thread in the newbie section where you will be able to post
Newbie Thread here: http://forum.bitcoin.org/index.php?topic=24717.0

function CalculateTimePerBlock( $btc_difficulty, $_hashrate ){
if( $btc_difficulty > 0 && $_hashrate > 0 ) {
$find_time_hours = ((($btc_difficulty * bcpow(2,32)) / ($_hashrate * bcpow(10,6))) / 3600);

function CoinsPerDay( $time_per_block, $btc_block ){
if( $time_per_block > 0 && $btc_block > 0 ) {
$coins_per_day = (24 / $time_per_block) * $btc_block;