PC performances down

Since CIS v3 beta, I have noticed a 2-3 sec lag whenever I open any programs on both my PCs. Initially I thought it might be viruses or spywares, but I have done extensive scanning with several products and nothing has turned up.

As I mentioned long ago, it seems cmdagent.exe is interfering with everything little thing I do. It is getting annoying and irritating. I also noticed that this is not reflected in the taskmanager, so I have almost no way of providing evidence.

My PCs are Core 2 Quad with 4GB running Windows Vista Ultimate x64, and Core 2 Duo with 1 GB running Vista Home Premium x86.

I would like to emphasize that this issue happen in every PC I have installed CIS on.

Please look into this