I just installed the trial version of NOD32. I am using Firefox and I tried setting it for Higher Efficiency - but too many sites do not load properly and my speed drops. I just read a long thread about this - and it looks like maybe things are better in the latest version. My trial version is 1.924 - and that thread talks about versions such as 2.13. I would hope that I could try the latest version of the program but using the update feature does not install any higher version. Thanks in advance for any help with this.