Two months ago I submitted the bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7128632 "Memory leak in jdk1.7.0 (42 MB per day)"
There is a leak of com.sun.management.GcInfo objects, when the method addNotificationListener() is called on mbean with type ManagementFactory.GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE. Can we increase the priority of this bug to Critical? When is it planned to fix this bug? Anton Mironenko
