Build ID: Mozilla/5.0 (Windows NT 6.1; rv:2.0b7pre) Gecko/20100920 Firefox/4.0b7pre Prerequisites: Make sure you have an active sync account. Login. Steps: 1.Navigate Tools->Sync now (From both sync clients) Behavior: Sync Now menu item is static. There is no feedback offered on click event. There should be at least the "last sync" timestamp as it was in older trunk builds.
There is a subtle feedback in the Sync Button (retrieved from customize dialog). This icon shows an animation during syncing, Then mouse over the button shows last update info in a tool tip.