I know this topic has been discussed before, but I would like some further clarification in discussion. I recently upgraded my hashing power from 160Mhash/s to 1.3Ghash/s. I found my network traffic was about 10Mb/h before, and since I will be hashing much faster now and I don't want to be consuming almost 10 times the bandwidth. Is it usefull to turn up my difficulty? Should I expect loss from turning my difficulty to something like 5? Is it right to assume that the result will then be that I submit shares 1/5 as fast but they are worth 5x as much while the work submitted still occupies the same number of bits as diff 1? I have tried running this difficulty for a few days now and noticed I still catch the >1 minute blocks. Haven't been carefully analyzing the bandwidth though.