You sir confirmed another fact I wasn't aware about, another awesome spawner idea that will only work when a player is nearby, I totally understand why they do this, for public server owners it help keep the CPU and RAM free when players that own a spawner aren't online even if they chunkload their base, it won't be full of entities), but its really a pain for the server owners like me that would love to make sure the spawner keep running at all time, I managed to find a solution, if I'm near my spawner when I disconnect, the spawner will still work (of course I guess we need a chunkloader, since my base is chunkloaded I have no problems with that), but if I forget to be around my spawner when I disconnect, I loose a lot of precious stuff (bones for bonemeal, rotten flesh for blood stained blocks, gun powder for various usage, arrows for my ACDS (Anti-Creeper Defense System)