To clean caches:
To clean the caches in your home folder, choose Home Clean > Clean User Cache.
To clean the Dashboard widget cache, choose Home Clean > Clean Dashboard Cache.
To clean the browser cache, choose Home Clean > Clean Browser Caches, and then choose your browser.
To clean the caches the system cache, choose System Clean > Clean System Cache.
To clean the caches the font caches, choose System Clean > Clean Font Caches.
To clean the caches of all users, choose System Clean > Clean All Users Caches.