Pros: Low hit on system resources, and is very thorough. Databases frequently updated, few false alarms. There's also an optional start up disk image available from the KAV web site which scans absolutely everything (although the start up disk version can be finicky to run in graphic mode.)

Cons: Requires extra steps to install after Norton is uninstalled because Norton fails to remove all the detritus they scatter all over your hard drive. KAV doesn't like password protected Excel files and flags them as suspicious.

Overall Review: It's worked well for me. I've been a user for almost three years. All my rebates eventually arrived, BTW.

Pros: Rebate made it free. Otherwise I would have returned this software.

Cons: Tech support hung up on me three times, and insisted that we do support via email. Seriously, through EMAIL, what type of troubleshooting can be done this way. This shows that they do not value their customers. I have a high knowledge of computers (both building and troubleshooting) and the fixes that they are having me do are trivial.

Overall Review: Again, had this product not been free through the rebate, I would have sent it back.

Pros: Version 2009 ran great for years on my older machine. They no longer support that version so I was forced to upgrade to 2012 which has more features and takes more resources.

Cons: Difficult to obtain refund from Kaspersky although 14 day money back is advertised on their web page. No responses to email support requests. 2012 is too bloated to run well on my older machine and I couldn't track down why it keeps accessing my internet every couple seconds which freaks out my firewall.

Pros: I did not see virus or other issues with Kaspersky installed.

Cons: When I tried to install dropbox, the system halts for ever. I had to uninstall both dropbox and Kaspersky, then install dropbox prior to the installation of Kasperky. The problem was solved and it took me several hours to find the solution. Today one of my laptop has "corrupted" mouse drivers. Neither touch pad nor usb mouse function. The problem was gone after I uninstall Kaspersky. I could not imagine that Kaspersky had stopped the mouse! The only way to rescue my laptop is to reinstall the operating system if Kaspersky stops both mouse and keyboard.

Pros: Good software

Cons: Couldn't install on my virus infected PC

Pros: great lightweight program. works seamlessly in the background. updates on schedule. really works flawlessly. 2012 can be upgraded to 2013, can split between 3 computers.

Cons: license only lasts a year, too short if u ask me.

Overall Review: nice buy would buy again if they sold it as free again

Pros: It was free, it auto updates, the refund arrived today, and I am happy.

Cons: none

Pros: Works as well as the rest. Good data base.

Cons: Kaspersky 2012 needs a patch to use on Windows XP. Otherwise, will lock out mouse function. Had to fix manuvering with arrow keys to allow external assistance.