When opening Firefox, I get a message "Could not initialise the application's security component. The most probable cause is problems with files in your browser's profile directory. Please check that this directory has no read/write restrictions and your hard drive is not full or close to full. It is recommended that you exit the browser and fix the problem. If you continue to use this browser session, you might see incorrect browser behaviour when accessing security features." Firefox then opens but all tabs are marked New Tab and no access can be obtained to the various websites. If I try to sign in to Google, a new window opens marked About:blank. I have wireless connection which is functioning correctly. Please help get my connection working if possible.