They showed 0 Gh on Slush for past 5 + hours, then I re-entered my pool settings and applied and they started hashing for me again. My Norton sees the M's Ant Miner as a virus.
But after all that, my speeds are OK average as usual, but last few blocks since they have been running again, my earnings per block have dropped substantially from about 0.002 to about 0.0015 that's a 25% drop off in earnings per block.
Bear in mind that if you stop mining for a period on slush, you are
punished due to the unique payment scheme in place there.