If you are running ~1mhash on GPU mining @ the current difficulty it will take a while to solve a block. Remember this is not like regular mining where you submit shares, here you have to solve the whole block!
GPU mining secures the block chain as you are familiar with on other coins. The twist is that the block rewards are variable depending on how much BOINC utilization you have. It will take a while (week or so?) to build up to 100% utilization in the GRC wallet because you need to accumulate BOINC credits, but if you are running BOINC on your CPU you should see some utilization right away.
CPU mining as I understand it isn't actually involved in securing the block chain...it is just a compensation given out corresponding to how much BOINC processing you are doing. Yes, you do need some GRC in your wallet for CPU mining to work because part of the process involves your wallet sending out beacons.
So to answer your questions, you would want to do both CPU mining and GPU mining because you get the steady compensation for running BOINC on your CPU and additional rewards for every block that you solve with your GPU.
Thank you, I'm beginning to understand now haha. Sorry folks. I have had BOINC cpu mining for maybe 2 hours now, if I go to my account page for malariacontrol I see that I now have a total credit count being credited now. Only concern is you said I should see some utilization right away, but it still shows zero utilization, 0 processing power, 0 thread count, 0 avg daily credits, 0 KH/ps etc.
also, is there any pro/con to running multiple projects at a time rather than 1 single project?