Bug#498066: psmouse module is not the cause

[Eloi Notario <entfe001@gmail.com>]

I did an additional test to determine if psmouse's lost synchronization 
errors were the cause of the random freezes.

I blacklisted the psmouse kernel module at /etc/modprobe.d/ and 
eventually my laptop froze until I pressed a key. Unfortunately, there 
were not any error messages either on dmesg or /var/log/messages.

So the problem does not reside on psmouse kernel module. I think that 
some people complaining about these errors all over the Internet may be 
facing the same problem than me but masked by the psmouse's lost sync 
complaints.