Love the idea of the product!

Downloaded to macbook, Intel Dual Core, 2 gigs RAM with OS 10.5. Seemed to greatly slow down my system. For example 5 minutes to log out and shut down, and about 6 minutes to boot up and random stalling using the computer, with the rainbow wheel turning for minutes at time. It got to the point in which I had to reinstall the OS and restore all day yesterday. I'm running fine now and its back to normal. (I currently don't have Radio Shift installed).

I can't say for certain if this was the cause or not.

I'm am asking if anybody else has has any issues with their computers slowing down (I mean significantly) when using this product? I would like to download again (and eventually purchase), however out of fear of another restore, I'm still licking my wounds from a lost day of productivity.