while my speeds are pretty consistent on two of my miners at 385 Mh/s and 285 Mh/s, respectively, btcguild often records them much much lower...my income has actually gone DOWN today...from average 0.0214 for 1.183 Gh/s (both 96 hr averages) to 0.0173 for 1.183 Gh/s today.
Why?
Difficulty increased today, maybe that's why?
NO. The servers are idling miners today. THAT is why. The drop is TOO severe.