SOE announced today that it will be merging Vanguard's two remaining servers, Halgar and Telon, on April 4th, at approximately 10am PDT. This will mean an end to the European Halgar server for good on April 9, 2013.
Any character over level 10 will be moved over automatically, while those characters under level 10 will only be moved if they've been active since October 3rd. Character names will be saved based on a naming priority that is dictated by when the character last logged in. So in other words, if you want to save your stuff, log in now!
Head on over to the complete server merge FAQ for more information.