About the disconnects, let me know if us2 or eu1 works better.
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That is indeed odd. Does it go up and down a lot, or is it 4-5 GH/s all the time?
It was staying 4-5GH all day long. I could access it remotely and restarted it several times and nothing changed; however when I got home and physically restarted it (i.e. unplug from hub, unplug hub, etc.) everything was back to normal for a bit, now it's acting up again. Anyway, like you said, is not pool related and must be something else.
I'll let everything run for a bit and then try us2, because I am still seeing the interrupt/reject share/restart work thing.