I've installed ( I did't upgrade any previous version) new JIRA 5.0.4 . I would like to know if installation of this version of JIRA makes that upmPluginUpgradeCheckJob service is also installed ? Because i don't know why i have this service ? I have read that it is obsolete service and i should to remove it. What for is this service and if i'll remove upmPluginUpgradeCheckJob service, will be any negative consequences ?