I got my late-2013 13" rMBP a few days after launch and, like many, suffered from the trackpad/keyboard freezing. After the firmware update I haven't had any freezing, but I still get kernel messages. I've reported this to Apple online a few times but haven't taken it to the Genius Bar because it's otherwise a very good machine. I thought the kernels might go away after the 10.9.1 update, but they're still there. Is this something to worry about? Is anyone else experiencing this?