It's been less than a year since Ubuntu 9.10 "Karmic Koala" was released, but the next big version of the Linux OS has now already arrived to take its place: Ubuntu 10.04 "Lucid Lynx." In addition to the usual tweaks and fixes, this one promises a boot speed that is "noticeably quicker" on almost any machine (and especially on those with SSDs), along with a range of new features including a social networking-oriented "Me Menu," Ubuntu Software Centre 2.0 for easier access to new software, and a slew of new cloud-based services courtesy of Ubuntu One -- not to mention the Ubuntu One music store. The release also marks the first time that GIMP doesn't come pre-ins