Currently running Panda Cloud free version. Based on the recent PC Magazine review I am thinking about switching to this program. Since it is not free I am stuck with it once it's paid for. I am wondering if anyone here is using this 2011 edition and how it performs. I am concerned that it might impact performance and slow it down. Sorry, but I do not trust the so-called online reviews.

Win XP SP3 - Two 10,000RPM WD Raptor HD's - 4GB memory - quad core processor.

Thanks.