What happened to you X after GB? Laggy?
Laggy? Yes it was very laggy.
But let us add a few more issues:
1) LED notifications messed up.
2) Wifi drops and does not connect.
3) Phone shuts down on it's own periodically.
4) Battery life dropped more than 50%.
5) Phone would restart on it's own after shutting it off.
6) Icons keep disappearing.
7) Wallpaper keeps changing.
BUT...these next 2 items were the items that made my decision for me.
8) My phone would miss incoming calls.
9) At times I could not make outgoing calls. Sometimes it just lagged up so bad when trying to make a call; other times it appeared that the call was going to be made an connected but would immediately disconnect and show you a total call time of 00:00. This required a reboot of the phone, and sometimes required multiple reboots. When one needs to make an emergency phone call, they do not need to wait for a phone to reboot.