It could be a few things. Have you tried to reset all your browser settings?
Assuming your antivirus is up to date, you could also try running GMER (gmer.net) and posting the log file up here. we'll see if we can spot anything.
yes i tried to resent browser settings.........but the problem still presists
what i have experienced is that i am facing this problem only when to access GOOGLE.COM and/or its affliate sites like gmail.com or try to WEB search.it works fine when i IMAGES search on google.com..............
its bit tricky
other sites are working fine like yahoo and almost all that i access
even i tried GMER as suggested. it did not find anything suspecious.
anyways thanks for ur reply......... keep going please
Have you confirmed your Proxy settings, DNS settings, and or HOST file is as it should be?
Did you try adding sites to the security tab, if you are using Mozilla firefox:
1. Click on 'Tools' from menu, select options
2. then select 'security tab and click on 'exceptions' and add the site
If you are on IE:
1. Click on Tools, then internet option
2. Security tab select 'Trusted sites and add the site
Please do send us the screenshot
Hope this helps