After you initiate the maintenance process it says in the online help "NOTE: These tasks can take a while to complete. Once you click 'Go' to start the process, do not interact with the admin site until you see the completed message. All currently logged-in admin users will be logged out."
Where is this message displayed? Is it on the initial admin login screen? If so how long does it stay there?
Also will running the maintenance help with viewing customer quicker? Right now it takes forever to pull up the customer page.