just an fyi, my hashrate that is showing is waaaaaay off. I'm really at about 1.75 mh/s rock steady on the rig I have pointing to this but sometimes it says 600kh/sec and sometimes 3500kh/sec lol...
This is normal - as started on the site, hashrate is a short term average based on shares, so your hashrate will fluctuate up and down, but on average will be equal to your real hashrate.