Been a few years since I've used Linux (2005, to be exact.) I don't recall whether new versions of the OS are available through the repository GUI or whether I can grab it via a command. I want to avoid a clean install. It was enough of a pain to get wireless working on Jaunty. So I've got Ubuntu Jaunty installed on a family member's AMD-based Acer notebook (64-bit Ubuntu.) She'd like to keep all her settings and just upgrade to Karmic. What's the easiest (and safest) way short of a clean install? Thanks!