Your Kaspersky software is protecting your system, and as long as real-time protection is enabled, it's checking your downloads. What aren't working are their browser add-ons.

Some of the vendors are quicker at providing updates for new versions of Firefox than others. For example, Kaspersky typically take several weeks, while Norton does it almost immediately. I think it's just their different philosophies about how to allocate their resources.

While the browser add-ons can be handy, I'm not sure whether they should be considered critical in your decision on which security software offers the best overall protection. Keeping your browsers and plug-ins up-to-date, avoiding suspicious email attachments and links, and not visiting sketchy websites are the top safety items in my opinion. Also, I run the NoScript extension.

When I was running from Windows XP, I had good results with Antivir, which did not add anything to the browser itself. Firefox could trigger it to check downloads, and that was all I wanted as far as interaction between them went.

Thanks for your reply. between Kaspersky and Norton which one do you prefer for online banking, Online shopping and surfing the internet? Thanks again

Both Kaspersky and Norton are good products, as are several others. I haven't used either of them for years, however. Currently I run Titanium Maximum Security.