Just something I noticed in the last couple of days.

I have been experimenting with the different firmware versions for the S3 Antminers and the versions after antMiner_S320140826.bin all produce buggy mining hashing totals after approximately 5 minutes of hashing.

Regardless of the frequency and voltage selected, using any of the firmware versions after antMiner_S320140826.bin causes all of my miners to drop to hashing rates from 50GH/s - 300GH/s.

As soon as I revert to antMiner_S320140826.bin the miners all jump back up to 440GH/s+ and remain stable at these rates.

It may be worth verifying on your own machines. If you have installed the newer firmware versions you may not be getting the hashing rates that you expect.

Hope this helps someone else.