Reboot issue with 10.04 and Sony Vaio VPCW221AX

Strange issue here with the latest iteration of the Vaio W with Intel GMA 3150... (VPCW221AX) I have searched and searched and have found similar issues with different hardware on older versions of Ubuntu, but nothing recent.

Ok, the issue: When selecting "restart" from the gnome menu, Ubuntu by all appearances shuts down, but I am left with a blank screen and running hardware, with no reboot. I waited for quite some time, but there is no disk activity, so I hold the power button until the machine shuts off, and it does. When I restart, it comes up fine, and there is nothing in the logs (Xorg or otherwise) to indicate any issue. There is no request for disk check, or any other sign that the filesystem was improperly unmounted. If I select "shutdown" from the same menu, it works perfectly; machine shuts off as expected. Just no restart functionality. This symptom also occurs when I am prompted for reboot after updates are installed. (which is really what makes this troublesome more than anything)

Interesting other tidbits: If in terminal i enter "sudo reboot" I get the same exact behavior. However, if I enter "sudo shutdown -r now" it reboots in the expected manner, sometimes, but not always... More often that not, it still hangs, but I figured I'd mention this since it was noticed.

Running Lucid 10.04, 2.6.35-6-generic, thinking that the newer Intel driver would help, but it hasn't... Prior to installing this kernel, it wouldn't shut down properly from the gnome menu either. This kernel resolved that issue, but the reboot issue persists. Current thought process is that the X isn't releasing the screen due to an immature driver, but I am admittedly not a linux guru...

I am open to any and all suggestions and can provide any logging needed. Thanks in advance!!