Also a few days ago btcguild got really lucky and solved a bunch of blocks in a really short period of time. If you are counting that day as your high day, then all days after will look like substantially less. That was pure luck though. It was the day that bitcoincharts.com showed like 15 thashes/sec of processing power on the network (not actually 15, but that's how fast the blocks were solved). At least for me, btcguild was steady the whole time besides that lucky day.