Because of the memory issue. You will also get slow scans and the CPU will go 10 % and the PC is slowed. Yes you can remove the toolbar but it will install even if you uncheck it. Toolbars don't offer protection they are a privacy risk and they use a lot of memory and slows the surf.
Well this is my own point of view (I have my own way of testing the software), everybody can say how they see a product, right ? This is my point of view, I don't care how other reviews are, I am too old for this type of review (each review different result).
CNET lies, you have in Firefox and IE (Chrome don't know, I don't use it), it is not that easy to uninstall please do your research before posting. Like I said in "
A lie called protection (fake sense of security). " do you own research or be a sheep like others.