Another couple:
1) So what does more exactly longpoll do and how to enable it with cgminer? I was under impression that it should be enabled by default, unless I specify --no-longpoll, but somehow it doesn't work for me on Slush pool. Shall I add LP to the pool URL?
2) So what's the best kernel for Radeon 5xxx ATM, shall I add -k phatk for optimum performance?
P.S. I really want to kill AMD, upgraded to latest Debian testing and the 10.7 or 10.8 or whatever they are consume 100% CPU. Argh...
I believe slush doesn't have longpoll. cgminer detects it by default and tries to enable it. Luckily cgminer is very good at minimising rejects even without longpoll.
Best kernel is likely phatk, and I'm pretty sure it will use that anyway by default.