[ubuntu] revert to old kernel

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http://ubuntuforums.org – I have my new system working mostly how I want it to however I went to update tonight and noticed that it seems to be a more complete update. That is I think its attempting to upgrade to 12.04.1 and the new kernel. The last kernel update I did resulted in breaking my software RAID and I am now booting off 3.2.0-27-generic. So my question any reason to think I would not be able to boot to the old kernel? (Hardware)