Ubuntu 15.04 codenamed "Vivid Vervet" is the 22nd major Ubuntu release. Even though not as minor an iteration like Ubuntu 14.10, Vivid Vervet still doesn't bring any sweeping changes to the platform. This is to be expected since Unity 8 and Mir display server is still some time away. And no, Unity 8 will not become a default until at least Ubuntu 16.04 LTS. At the current rate though, even that is being overly optimistic.Ubuntu 15.04: The good old Ubuntu is back!My favorite Ubuntu versions has almost always has been the LTS releases. Ubuntu 12.04 could be termed as my favorite Ubuntu to date, and Ubuntu 14.04 LTS could be a close second. But I've never faced much issues with any of the Ubuntu releases, except for Ubuntu 14.10, which was just beyond messed up. Things were so bad that I had to switch from Ubuntu to Freya almost permanently. And I have nothing but love for that incredibly clean and simple OS. Some of the reasons why I love elementary Freya so much.But Ubuntu 15.04 turned things around for me. Everything seems to work just as good as it has always been. It's a shame that I was not able to find out the real cause for all the trouble I had with Ubuntu 14.10.