low breezy hard disk performances

[The Saltydog]

I have completely reinstalled Breezy, started from a Colony CD4, and
my hard disk performances have not been improved! So, it is not a
matter of upgrading from Hoary, nor a matter of some strange module or
service I may have running. It is breezy or kernel 2.6.12. Hard disk
performances are the half of the ones from Hoary, resulting in slowing
down the whole system...