Lately my Ubuntu 12 system has started acting very strange. Sometimes the computer freezes and then unfreezes 2 minutes later, and other times when I try a basic command like
less I get the error
bash: /usr/bin/less: Input/output error. But this is intermittent too. Any suggestions?
Also if I try
sudo reboot and enter my password, I get
sudo: unable to open /var/lib/sudo/plato/7: Read-only file system
Before I used to be able to do
sudo reboot fine.
If I tail
/var/log/syslog I do see these curious lines:
.... ata1: softreset failed (device not ready) .... ata1: hard resettting link .... ata1: link is slow to respond, please be patient (ready=0)
What can I do to fix this?