i was downloading some stuff from limewire today and after i was done i logged off my pc. when i logged back on i couldn't connect to login sites and every ewf letters or so i type it will move the black blinking bar back a few letters. i have antivir personal edition and nothing came up when i scanned my pc with it, please help

Download Ewido and run in safe mode

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its all good now, i restarted my router and now everything works.