Hi
Thanks for the reply. I have since found out that what I have experienced is normal. It is something to do with finding a new block to work on. I'm just a noob and need to learn about the intricacies of all this.
Thanks again.

Hello Chaps
I have only just started mining and this may be nothing. I have been mining with 2 R-Box units using CG miner for a week with no problems, bitcoin was dribbling into my account. I obtained one of the new S3 units yesterday and set that up fine (I think) it shows up in my account and is hashing away nicely also the bitcoin rate went up. However I haven't seen any new rewards show up all day and my pending balance is now zero.
Is this normal, or am I doing something wrong?

Thanks in anticipation.