I m not able to access some sites ,,plz help

[aQi_g]

Hi
I m not able to access all securit related sites such as, spohos ,avast,symentec etc,a and also microsoft.com.
my system specs are,
WINXP SP 2
160 GB HDD,
1 GB ram,
amd athlon 5000, 2.61 Ghz,
256 kbps Internet connection,
securty softwares insatlled:
avast home edition AV,
spybot S & D,
autorun virus remover 2.3

 

[Quiz_Master]

Are you behind some sort of Firewall? Check with your Network Administrator if thats the case. Also try to access this using a Web Proxy site like Hide My Ass or Gaurdster .

It can also be a Trozan Worm, in such case I suggest you install Spyware doctor and do a Scan in Safe Mode.