The latest I've seen by x-swat team is 304.64 I don't believe jockey would have offered you 310 don't think it's been released yet.
If you want the latest driver compiled by the Ubuntu x-swat team you'll have to add their PPA to your repository list.
you can do that by going to the following page and following the instructions there:http://www.ubuntuupdates.org/ppa/ubuntu-x-swat
then you can install the latest from them either by jockey or teminal or synaptic.
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