So correct me if I'm wrong here.
You've put the case forward that it cannot be the browser unless it's faulty.(I can believe that with IE)
We all know that speeds fluctuate by the second and that's why speed test site send multiple data packets and average the overall speed.
Kaspersky confuses the speed test on a much bigger scale.
You have no evidence or proof that any other AV prog does the same (check out one of the kaspersky forums sometime)
http://forum.kaspersky.com/lofiversi...p/t158618.html
Your assumptions and reasons are based on what you know about Kaspersky as that is the only AV prog both you and your company support.
Your reasoning also has another flaw. Buffering has to be held on a PC somewhere, it has to exist somewhere to be retrieved. This is exactly what Kaspersky does with a speed test files, It puts them in a buffer or
cache to be called on when required.
Over to you.