The browser’s homepage suddenly changed

This is a common symptom that a virus or browser hijacker may have infected the computer.
 Try re-setting the home page to the default:
o In Internet Explorer:
 On the Tools menu, click Internet Options.
 Click the General tab.
 In the Address box, type the Web address you want for your home page.
 Click OK.
o In Mozilla Foxfire:
 Open the web site you want to set as your home page.
 Click the icon to the left of the web address and drag it to the Home button.
 Click Yes.
 If the home page still reverts back to the “new” page, do an Internet search using keywords that include the name of the “new” homepage and the word “virus.” If there is a virus, this search may reveal more information on the virus and how it can be safely removed.
 Run a virus scan