http://ubuntu-archive.locaweb.com.br/ubuntu/ http://mirror.unesp.br/ubuntu/ https://mirror.uepg.br/ubuntu/ http://ubuntu.c3sl.ufpr.br/ubuntu/ http://mirror.ufscar.br/ubuntu/ http://ubuntu.mti.mt.gov.br/ http://sft.if.usp.br/ubuntu/ http://mirror.ufam.edu.br/ubuntu/ http://archive.ubuntu.com/ubuntu/