At least one node is down, and I think the preferences on the Geo server have been changed. So you might see your miners on unusual nodes. Hopefully the changes make sense and reduce your invalids.
On another note, multi-output payments are a reality now. This puts the fees more in line with other pools. So nothing to worry about there any longer, thank goodness

I did notice my miners mining on some nodes in some places they never have before and once I even seen overseas. Yesterday 2 miners did drop from the pool for a very short time but were back on in less than 5-10 mins.
What is "multi-output payments"? I take it that it is where you can set a coin amount instead of a time frame for payments? If so is that set by the miner or the pool?