My ISP is running a transparent proxy server on port 80 as I found out
from this thread
http://mailman.archlinux.org/pipermail/arch-general/2011-March/019172.html
Now from last two or three days, I keep getting pop-up ads from a
particular domain on every website i go to - even on text only websites
! If i choose another proxy server in firefox , then that does not
appear on any site. But i normally connect to internet, that specific
pop-up to a very particular website appears on every single page. If I
install adblock plus in firefox, then of course no ads are displayed.
So is it possible that my ISP is serving that ad by intercepting
incoming http traffic ?