Karua's resignation,though viewed diffrently by different people was long overdue. She's quite a good reformist talker but no action worth writing home about.
Apart from that,she has tried. No one fights corruption and wins. As she said sometime ago,corruption fights back. If in doubt,ask one Githongo,Kimunya and Karua herself. The 'corrupt' will eat the cake and get anyone blocking them out of the way whatever it takes. As suggested here,Kenya needs a radical surgery or it will bleed to death.
The plans of the diligent lead surely to plenty,but those of everyone who is hasty,surely to poverty.