Google Inc. launched a Linux version of Google Desktop on Wednesday, almost three years after the product's launch for the Windows operating system. The application, designed for indexing and finding data in PCs, as well as for searching the Web, also comes in a Mac OS X version, introduced in April of this year. Like the Mac OS X version, Google Desktop for Linux is a beta, or test, product. The Windows version shed its beta tag already, meaning Google considers it a more stable and mature product. At this point, Google Desktop for Linux does not feature the Sidebar...