Please read! Worker diff changing, getwork/gbt closing.
2015.07.11 at 10:00 UTC:
Your miners will get disconnected as this change goes live but will be able to reconnect immediately.
Default worker difficulty when miners connect: 512 (was 16)
Minimum worker difficulty: 64 (was 4)
This is to better support fast (1+ TH/s) hardware, some of which is very unhappy with low difficulty.
For old and very slow (40 GH/s and down) ASICs the new difficulty may be a bit high causing the live hashrate on the website to become very inaccurate. This may cause false alarms from the idle worker notifications if you use those. Mining will still work though.
Support for getwork and getblocktemplate (GBT) mining protocols will be turned off. Only Stratum will be supported. If you are already using Stratum you will not be disconnected or otherwise affected as this goes live.
What do you need to do if you use getwork/gbt today? Change the URL from http://mint.bitminter.com:8332
If you need help with this, use the contact form on the website to ask for help.