[ubuntu] Problems With Reboot After Kenel Upgrade

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http://ubuntuforums.org – Hi, I just upgraded my kernel on Ubuntu 12.04.02 from linux-image-3.2.0-29-generic-pae to linux-image-3.2.0-40-generic-pae and now when rebooting my machine hangs half way through. I had to hold down the power button for several seconds to switch off the machine but when I did that and rebooted I got the Grub menu and picked a normal boot from linux-image-3.2.0-40-generic-pae and this booted up OK. However each time I do subsequent reboot I have the same rigmarole of my machine hanging and then doing a hard reset. Any advice would be appreciated. David. (Hardware)