404 Error in Firefox

[sharjeel]

Hello Users
I am getting 404 error in firefox on some of the websites i have opened already and also forbidden error but some days before they opened on my computer but now getting this error i have forefox 5.0 Version how can i fix this??? But ihave checked on second Pc they are opening

[truenorth]

You could download and try the same sites on another browser. There are many, my personal favorite is Opera (latest version 11.11).It is often handy to have more than one browser for issues such as this. You might also disable all the add-ons that you may have in Firefox and see if that resolves the issue. Then if it does you can add them back one at a time until you find what could be the offending one. truenorth
http://www.opera.com/browser/

[jason2074]

https://addons.mozilla.org/en-us/firefox/addon/404-error/

[sharjeel]

This is the *censored* error it is giving on most websites I have opened these all websites on another PC but they are all ok but not at my PC
eg. http://www.classifiedhongkong.com/

Forbidden

You don't have permission to access / on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Apache mod_fcgid/2.3.6 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.classifiedhongkong.com Port 80

[recovering disk space - old attachment deleted by admin]

[truenorth]

Would you please share with us the results of your HAVING TRIED the 2 suggestions posted by members above that are trying to assist you with your problem. truenorth

[sharjeel]

No result and isn't there any internet configurations problems also causes these problem???

[truenorth]

Do i understand you correctly when you say "No result" that you did NOT even try the suggestions that have been offered. truenorth

[sharjeel]

Yes but no result