The biggest changes made this week involved ensuring that no previously recorded rounds were recorded a second time, and making the yellow colour in the hashrate history chart easier to see. Both suggestions were courtesy of Dr. Haribo, pool op of "Bitminter".
BTCGuild lost a little percentage of the network hashrate and 50BTC gained some, bringing them quite close to DeepBit's hashrate. DeepBit now has a challenger for the top spot for the first time in more than a year.
Most other pools this week lost or maintained their percentage of the network hashrate.
You can view all charts at http://organofcorti.blogspot.com
![](https://ip.bitcointalk.org/?u=http%3A%2F%2F2.bp.blogspot.com%2F-tCwHCKZaVNU%2FUF-xmgp8pYI%2FAAAAAAAACfw%2FrahzFj1P9SA%2Fs1600%2Fcurrent.pool.hr24092012.png&t=591&c=WORCFEKkLikHrA)