I have found that my usage of Comet (and perhaps anyone’s
usage of Comet) doesn’t play well with certain AV programs and software
Specifically I am using Kaspersky Internet Security Suite
7.0. I found that if I enable web anti-virus detection then Comet gets
blocked unless I add the URL into the trusted sites. It seems that the AV
program can detect that the traffic over the HTTP port is not true HTTP by
using heuristics and thus suspects it’s a virus. Also, anti-banner
protection blocks it in a similar manner.
This is actually a serious problem as I don’t want people
to go to my website and find it doesn’t load at first attempt for these
reasons as they will probably never come back and they certainly won’t
fiddle with their AV or firewall until it works.