I have the exact same problem as you. I am the only one who is having this problem out of four friends with the x10 on rogers.
I can not update via seus, it just tells me to keep holding back.
All the buttons lock up and only touch and power work.
Sometimes they work randomly other times i need to turn the phone off or pull the battery out.
I have warrenty and instant exchange but i have a hard time accepting the hardware has failed.