Whoops - forgot to say what I DID learn the hard way. When I accepted the upgrade from ubuntu 10.04 alpha to 10.04 LTS, I had my mouse plugged in - the build then wouldn't read either my mouse or the onboard trackpad.
I didn't make this mistake when upgrading the 910 instance on this or my main R61's Hardy install (again, originally preinstalled by Linux Emporium). Stuff like this needs to be flagged to users WAY before they finally accept the upgrade.
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