I experience a lot of server maintenance from Knight Online, to Ragnarok, Requiem, to Rohan and now in Cabal whenever i'm eager to level-up my characters i ended up can not connect to server. When i look on their site an announcement was post that there will be a server maintenance today blah..blahh... What is the used of it if there is no patch or so whatever?....
Server maintenance does not fix bugs or the like. It is just to make sure servers will not crash or delete information. Kinda like, you know, defrag for you PC.