The X Lab has published “Troubleshooting Mac OS X, Tiger Edition,” a new ebook dedicated to preventing or resolving common problems with Mac OS X 10.4 Tiger. This is the third ebook in The X Lab’s continuing “Troubleshooting Mac OS X” series. The 600-page book is extensively hyperlinked and cross-referenced, both within the book itself and to some of the best Mac OS X troubleshooting information on the Internet. Pricing starts at US$19.95 for a single-user license. Multi-user licenses are also available.