Hrm thank you will have to look into those.
I have shut down keeping VNC open and noticed the hash reported to pool is much greater now. It seems to have gone from little over 5MH to darn close to 6MH. Thats around 100khash per machine for me and that adds up per day on the right coins
You could try UltraVNC server with or without "mirror video driver" installed. That's what I actually use when at home. The hash rate plummets on the precise moment I log in, but then it comes back. I need Teamviewer for restricted firewalls but didn't notice any issues either.