I've got a g53sw as well and have started having the exact same symptoms with its touchpad. I haven't noticed the keyboard issue yet but that's probably cos i have another usb keyboard that i use instead.
The touchpad problem is EXTREMELY annoying as it requires a reboot to make it go away and always seems to start happening right at the worst possible time. It basically renders the touchpad completely useless when it starts happening.
Are you within your retailer's return window?