I am in the BTC Guild pool and things have been going well, but today I noticed that there was a three hour block of time that I did not receive any block rewards.  Shouldn't my 4:02 Block reward be three time larger or more?


Your Recent Block Rewards                                 
276435   0.02659%   0.00651652      2013-12-22 04:02 PM   Three hours later but only got the same reward
276421   0.02615%   0.00634239      2013-12-22 12:56 PM    as the other much shorter times
276419   0.02615%   0.00634886      2013-12-22 12:55 PM
276406   0.02616%   0.00637266      2013-12-22 11:22 AM
276403   0.02624%   0.00636921      2013-12-22 11:06 AM
276401   0.02624%   0.00636809      2013-12-22 11:03 AM
276390   0.02637%   0.00643261      2013-12-22 09:54 AM
276388   0.02646%   0.00643220      2013-12-22 09:24 AM
276385   0.02646%   0.00643238      2013-12-22 09:01 AM
276384   0.02646%   0.00646304      2013-12-22 08:53 AM
276381   0.02669%   0.00647553      2013-12-22 07:54 AM