By fast I'm assuming you have a broadband connection, correct?
My guess might be a problem with the WiFi Connection security checkpoint in
the Internet Agents portion of Real-time Portection if you are connecting
using a wireless router.
But what you might also be seeing is a problem where the packets of data
that are being transmitted accross the Internet aren't getting to your system
fast enough for the refresh window on your system. If the refresh window is
not large enough (i.e., the size of the data file), then the system will ask
for packets to be resent even though they really don't need to be resent. I
discovered this possible cause from Call for Help on G4tv, Leo Laporte told a
person that was getting a decent download rate for local (Austrailian) sites
but was getting about 1/2 that for sites that were located elsewhere to go to
http://cable-dsl.home.att.net/ and check out John Navas' web site that talks
about tweaking settings to get a faster connection using broadband. NOTE:
In order to use this you will have to use the ping command to ping a site
that you are trying to view to get it's average ping time and then use this
value to lookup the refresh window setting that's appropriate from the table
on
http://cable-dsl.home.att.net/. To do so, look over the show notes from
http://www.callforhelptv.com/callforhelp/shownotes/0226.shtml?transcripts
(search for Ben, the name of the caller that was having problems with latency
of downloads and viewing sites).
Alan