Can some one help me figure out what's wrong with my hash rate I was running one erupter blade and 3 of the usb erupters (333 mhash) and getting averaging about 10.5 Ghash. I have added one more blade and now getting only 16 to 17 Ghash per shift. Every time I check the blades configuration page they are all ways running a 99% plus and over 10 Ghash each. Any ideas what I should look for on my end ?