OK, thanks - that's what I thought. I noticed my own DOA rate had gone up very slightly, and the thought of whoever it was throwing so much hash away was too painful to bear - so I've had to block him/her in IP tables. Feel a bit bad now though......hope they got failover set.
Whoever it is that is using my node (
http://iyftech.zapto.org:9332) with payment address 1MhJ3N8szGSQEMLiyf2C4hgkWtpK3vZfCp - please check your settings - 50% of your work is DOA!!
PM me if you need any help - before I ban your IP

Last call for the user in the UK mining on my node with BTC address 1MhJ3N8szGSQEMLiyf2C4hgkWtpK3vZfCp -
you are literally throwing away 50% of your work for the last 6 hours!, not to mention making my stats look bad.....

PM me, otherwise I can't help you.
I've even put a message up on the node web interface for you - surely miners don't just point their hash at a p2pool node without checking it?

This is painful:

On a brighter note - 7 blocks & counting......