2.7c crashes every so often for me, and just yesterday my virus program deleted the executable so I've gone back to 2.6. sofar phoenixminer 2.6 is te best version and verry high hashes

your rig isn't stable. It's not Phoenix's fault.
over 200hrs straight and counting on my 8GPU rig. 2.7c
I have also 200+ hours of nonstop mining on both AMD and Nvidia rigs.. So really good.
Appreaciated SSL connection..So far OK.