Ya probé editando el grub y en la línea del kernel, coloco la opción noacpi con el mismo resultado :-(
2013/5/14 Mail Delivery Subsystem <mailer-dae...@delfin.secyt.gov.ar> > The original message was received at Thu, 9 May 2013 15:09:42 -0300 > from goku.mincyt.gob.ar [200.9.244.13] > > ----- The following addresses had permanent fatal errors ----- > <mcontre...@mincyt.gob.ar> > > ----- Transcript of session follows ----- > <mcontre...@mincyt.gob.ar>... Deferred: Connection reset by > mail2.mincyt.gob.ar. > Message could not be delivered for 5 days > Message will be deleted from queue > > Final-Recipient: RFC822; mcontre...@mincyt.gob.ar > Action: failed > Status: 4.4.7 > Last-Attempt-Date: Tue, 14 May 2013 15:24:45 -0300 > >