My gmail won't push with Google sync in X10, definitely have no problem with the sync settings (all ticked), and tried to clear the data in Gmail and even a factory reset, but still no push. I then tried Moxier coming with the X10, surprisingly Gmail push works in it, and a very good function in Moxier is that you can customize the periods of pushing and polling mode within the day. But I still want to know why Google sync does not work in my X10, any other people have similar problem? I actually have a Moto Quench, which could push Gmail in the beginning, but suddenly stop pushing without a reason. Finally, can someone explain how the Gmail push works in Moxier. As Moxier is based on Microsoft Exchange server, I wonder how Microsoft Exchange server synchronizes with Google, is Gmail built based on Microsoft Exchange server?