Ho trovato la soluzione per risolvere questo problema nel forum inglese di UBUNTU, questo è il link al topic:
http://ubuntuforums.org/showthread.php?t=331418Questo è l'intervento che mi ha permesso di risolvere il problema:
" The heads in the laptop hard drive are parking. The 2.6 kernel causes them to do it in about 5 seconds of inactivity. In windows for what ever reason it is set to something more like 60 seconds of inactivity.
Since the heads are parking when they are not supposed to it will wear out within a year or so. The hard drive is only rated for so many parks.
This IS a bug.
Until this problem is fixed you can disable this "feature" with
Code:
sudo hdparm -B254 /dev/hda
or
for sata drives
Code:
sudo hdparm -B254 /dev/sda"
Un grazie immenso alla comunità LINUX.