I (Peter Sefton) have Ubuntu 9.10 running on the Latitude Z the only problem is the trackpad which is only recognized as a generic mouse.
This page is just for discussing using Linux on the Dell Latitude Z. For a general discussion about this laptop you can visit the Dell Latitude Z page on LapWik.
Recoginized as a generic mouse so it is impossible to turn off auto-click meaning if you brush it while typing the cursor jumps around. See this page for a not very good fix: http://ubuntuforums.org/showthread.php?t=1429357
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