Have you tried the older version of Ubuntu? The 6.06 version with Long Term Support? I know that Gutsy Gibson isnt considered LTS and its support will run out in April 2008 when they release Heron which will be the next distro of Ubuntu with LTS.
My suggestion would be to use 6.06 and check their forums for support. If anything since it is LTS they should have some kind of response for you.