Anyone experience high reject ratio? (2%)
I've had 1 reject in the last 2 hours. You on stratum?
I had 1 reject in 3 days, then yesterday suddenly 5 within 18 minutes (all on "eustratum"). Still the best rate I've ever had.
* Pontius worships stratum on OzCoin.

A network reconnect is usually the cause of a bunch of rejects (your IP address changes on DHCP, your connection has a short outage or even if the OzCoin server ever restarts)
Otherwise, the rare lost shares are either if you have variable difficulty and you manage to cross a boundary that switches your difficulty (quite rare) or you happen to be sending a share just at the same time the server sends an LP - also quite rare, but more common the higher your network transfer latency is.
Although I have mentioned that the problems with stratum are fixable, they are, also, relatively negligible
The lost shares are next to nothing compared to GetWork and even GBT
The only real problem at the moment is if you have a very bad network connection and keep losing your Stratum connection.