same here, and I'm tracking this post juz in case a solution pops up

Internet services working when the
web access control is on:
- e-mail (ofcourse not webmail) both pop and smtp
- ping, both in dns and in ip addy
- telnet, both dns/ip
- tracert
- all TCP / UDP services running in background which includes IM, download managers, etc
Internet services NOT working when
web access control is on:
http (no proxy, port is default 80)
Browser: Mozilla Firefox 1.5.0.6, IE7 beta 3
Error messages? Naah, just the plain old page cannot be displayed.
OS: WINXP SP2
Scripts running? Yes, but none pertaining to internet nor LAN (this is my only PC)
What I already did:

cleaned cookies and temp
scanned adaware through ewido (found 32, cleaned em, same problem)
added avast in windows firewall exceptions list
added same in trust lists
BTW, if it needs mentioning AVAST didn't find any viruses on system and she is the only anti-virus on my system, though I do have Ewido
checked file permissions --> found two errors, fixed em using using WMIdiag command in cmd
when I'm just about to give up, I went to this forum and voila, found I'm not the only guy in the planet who's having this problem.
Cheers

Temporary solution: well, I have that web access control turned off

Don't know what else to do...
