Microsofticon is currently working on fixing a bug that has been found in versions 6 to 11 of Internet Explorer and the United States Computer Emergency Readiness Team has issued a press release asking individuals to use alternative browsers until the bug is fixed :

Click here to download Firefox

Click here to download Chrome

Click here to download Opera

This bug is exploited by malicious web sites so IE users can continue to use their browsers by avoiding potentially dangerous sites. XP Users should use alternative browsers.