Cannot connect to any website, but FTP, Email and Ping work

Hello everyone. I really hope someone here can help:

Computer info:

Win XP Pro SP2, AMD box 1 gig RAM 2 160 Drives 3 partition total: C, D,
E. Dual booth with another XPSP2 install on D for music and video
mastering.
C drive XP is a developer box with Apache, PHP, Mysql, Dreamweaver,
photoshop etc.

Problem:CANNOT CONNECT TO ANY WEBSITE -- INTERNAL OR EXTERNAL, BUT FTP
AND EMAIL WORK

Early this morning I was able to browse and check email without any
problems, as usual.
I restarted my computer and launched Dreamweaver 8 to check on some
work I am doing.
DW8 had problems accessing the "manage sites" screen and it hang up
twice.
Previously I had problems with it reverting to an older site directory
(see below).

At the same time I launched Maxthon browser (an IE tabbed built) and I
could not connect to any site on the web.
Dialog box said "Web site found" and showed a progress bar, but it
would stop halfway.
I tried using IE with the same result.

I did all the usual checks, including resetting my router and modem,
unplug everything and so on. No luck.
I tried connecting to the web with Firefox and Opera with the same
negative results and same behavior.
I launched DW8 again and tried to execute an FTP connection. It worked.

My email works as well without any problem (outlook 2003).
I also used CuteFTP to connect to various FTP servers: all good.

I tried to ping yahoo's ip address (they allow pinging) and I was able
to trace the packets in and outbound. Same with yahoo.com. Pinging of
IP and domains works.

I terminated the McAfee firewall, no luck, I also checked the windows
firewall to make sure it was off.
I cannot connect to my local router (192.168.0.1) or to
http://localhost (Apache)

In short, no web browser (ie,opera, firefox) can connect to any
address, local or remote. The only way to display anything is to load a
local html file.

I downloaded and run ispfix.exe (found on a forum post) without
success.
I eventually booted up with a second XP partition I have setup for
music and video recording and I was able to connect without a problem.
A macintosh I have on my network also works well.
My last test was to boot in safe mode and it seems to work just fine.
In fact I am posting to this group using my main XP boot in safe mode.

One other funny thing that is happening and that could be related is
that Dreamweaver is somehow reverting the websites directory even after
several attempts to change the directories from my E drive to my C
drive. This started happening after I installed the Apache server, PHP
and mysql and I changed the root folder for my local sites from the E
drive to a dir in the C drive. Reason for that is that I wanted to set
up Apache, php, mysql as a local testing server.
When I try to go to "Manage sites" DW8 hangs for a long time, but
eventually displays the proper window and some of the directories for
my websites have reverted to their old location. I entered the new
location a few times but it seems to go back again without any
discernible pattern. This could be because I still have DWmx (older
version) installed and the preferences my interfere with each other.
The reason I mention DW8 and its odd behavior is that it was the only
other application open at the time of the problem.

The only new software I installed is Apache (php, mysql) but that was 2
days ago and everything (except the site management in DW8) worked fine
until today.
Before I restarted this morning and I encountered the problem all I did
was to try to set up an email account on outlook. No other software was
installed. In outlook I changed an email account outgoing port from
3535 to 80. That's all.

Google searches for this problem did not produce any pertinent results.
Some similar ones, but nothing I could use.

I would really appreciate your help, in any shape or form, on this one.
TIA
Corrado

.

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