Hi Tim,
Did you upgrade this system from an earlier version of Trinity (e.g. 3.5.11), or is it a brand new installation?
well, on this page: http://trinity.pearsoncomputing.net/ I clicked on Ubuntu Karmic and below [Legacy] 3.5.10 Installation Instructions and followed the instrucktions for Karmic. I see the problem now. I'll try Lucid now, and let you know. I hate those names people are using instead of numbers.