Unfortunately, there are two bugs contained in the Ubuntu version included on the Linux Magazine Issue #90 DVD Virtual Distro Sampler. For more information and suggested workaround, please visit the Issue 90 DVD page.
Ubuntu Mobile and Embedded (UME) will be out soon, and Linux Magazine Brazil had a preview at Bossa Conference 2008, presented by Adilson Oliveira from Canonical. UME is targeted at connectivity devices, such as UMPCs and MIDs (Mobile Internet Devices), but not at cell phones, as they are "too closed", according to Oliveira.