Try clearing the DNS cache. See this - http://www.tacktech.com/display.cfm?ttid=330 - and this - http://www.tech-recipes.com/rx/233/clear_windows_dns_cache/

You need to update your plugins. It is important to keep them updated due to continuing security fixes and improvements in those plug-ins: *Shockwave Flash 10.1 r53 *Next Generation Java Plug-in 1.6.0_20 for Mozilla browsers #Check your plugin versions: http://www.mozilla.com/en-US/plugincheck/ #*'''Note: plugin check page does not have information on all plugin versions''' #'''Update Shockwave Flash''' #*Use Firefox to Download and SAVE to your hard drive from the link in article below #*SAVE to your Desktop so you can find it #*After download completes, close Firefox #*Click on the file you just downloaded and install #**Note: Vista and Win7 users may need to right-click the installer downloaded and choose "Run as Administrator" #**Note: Most browsers other than IE will also get updated with this one download #**Note: To update IE, same procedure '''<u>but use IE</u>''' to go: http://fpdownload.macromedia.com/get/flashplayer/current/install_flash_player_ax.exe #*After installation, restart Firefox and check your version again. #*'''<u>Download link and other information</u>''': https://support.mozilla.com/en-US/kb/Managing+the+Flash+plugin#Updating_Flash #* Also see: http://support.mozilla.com/en-US/kb/Installing+the+Flash+plugin #'''Update Java:''' #* Download and update instructions: https://support.mozilla.com/en-US

See also http://kb.mozillazine.org/Error_loading_websites - "Error_loading_some_websites"

Thanks guys for the prompt reply, I donnow what happened, but in the meantime, everything has changed normal and is working!!!Anyway, thanks!