vibration issue

Hi guys, i just got my fone in the mail, with fw 905.
I have couple of issues and kind if you guys can help me out.

Why sometimes the phone doesnt vibrate even tho i turn it on in setting and also m8sprite? (When receiving calls and text messages)
Why half of the games in DL section doesnt work for me...

Most of the games are compatible with a earlier firmware, or with a later firmware, you need to look carefull if your FW is compatible

when i plugged in the usb charger it does vibrate..not without. Does anybody experience the same problem, it is because i have the vibration turn on in m8profile, system sound, and m8sprite??? Can anybody help meeeeeeeeeeeeeeeeeeeeee pleassee

Must be some software problem. I have all those programs installed and vibration enabled, and it works just fine. I suggest you do a registry reset (holding the M+power button when you turn on the phone until you see "Clearing Registries...")
Don't forget to backup from Settings > System > Data Backup!

I reseted the registry still no luck, i also reflash the firmware still no luck..
its only vibrate only when i plug in the usb with out hook it up to the charger or computer.
CAN SOME NICE PEEPS OUT THERE HELP ME PLZZ HUHUHUHU
COULD IT BE HARDWARE ISSUE?