I have used Kaspersky for almost a year and it regularly found viruses in my email which gets a lot of spam. I had problems with Kaspersky slowing down my windows login. I changed to a trial of NOD32 two weeks ago. All by problems stopped but I have not had a single virus since. Can I be sure it is working? I have a tick against Thunderbird in POP3 scanning and it is not via a secure connection.