Totally new to this mining/overclocking,
got a 5850 card yesterday with default settings it gets 305kh/s
however today I overclocked it from Stock 725/1000 ( GPU/memory clock)  to 925/1050 and in result Im now getting 385kh/s which is about 26% increase which is Nice! Temperature is constant at 76-77c (have taken off the side panels for more airflow as well)

Can anyone tell me is it ok to overclock it like this and run it at those temperatures?

Just started mining and installed the newest versions of them,however have some problems while mining.
Which would be the best SDK and Catalyst versions to have while mining Scrypt Coins?
I have 5850 card.
thanks.

Bought today a videocard,3hours later finally managed to start mining.
I have 5850 card and mining with GUIminer,however Im not sure whats happening.
When I first launch the Guiminer(the accepted shares flow in like crazy super fast about 50shares/30seconds or like that but after a minute the shares accepted as displayed in guiminer start to flow in reallllly slowly like 2shares max per 30seconds. as I press Stop button and then again Start the accepted shares start flowing in a bit faster until 20seconds later they again stale and I get max 2shares per 30seconds.

Anyone have any idea what this could be?

I see a lot of people are running 7970 but it's around £250 on ebay used which is damn too rich for me now.
I have about £100 which I made last week from £10 i invested in some coins and then traded/sold them on,don't really want to spend any other money other then Which I have already made with these coins.
what would be the best GPU I could get for that kind of money or less?

I get now 7kh/s from my laptops cpu which is just pathetic  
also Im interested in mining only these new Scrypt based alt cryptocurrencies.