My system was having this issue while using the 3.2.0-27 kernel. The problem seems to be solved (no freeze after 48h) after upgrading to 3.2.0-33 through ppa:kernel-ppa/pre-proposed.
My system was having this issue while using the 3.2.0-27 kernel. The problem seems to be solved (no freeze after 48h) after upgrading to 3.2.0-33 through ppa:kernel- ppa/pre- proposed.