It used to be hovering around 4.2 - 4.8 although now is around 2.3... any ideas?
Has anything changed in your setup? Low hash rate is usually because you don't provide enough power to device (added another USB device?) or the device is overheating. You need better cooling or turn down the frequency. What happens when you unplug for 5 minutes... does hash rate go back up?
Nothing has changed... I tried unplugging it and rebooting the whole thing - nothing. The power was working fin before, and nothing has changed, so I can't think what it would be...
Thats normal, especially if its been running straight for a really long time. Some cores will destabilize and shutdown eventually. Driver has a fix for a complete core stall, but not drop in hashrate yet. Will have this fix in on the next release.