Today I received this email from our hosting provider :
Dear Davide Clerici,
As part of a continuing effort to provide the highest quality service for our valued customers, your hosting account has been migrated to a new server that will provide you with increased performance and reliability.
Please note that it can take up to 24 hours from the time the update was completed for any newly-published content to be visible on your Web site.
DNS NOTE: Your account has been assigned the new IP address 72.167.172.125
I tried it, and it looks faster ...
They left the content of the site on the old server ... That now I'm using as a test ground ...
Please tell if you noticed some increase in speed...