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Build: NetBeans IDE 6.9 (Build 201006111053) VM: Java HotSpot(TM) Client VM, 16.3-b01, Java(TM) SE Runtime Environment, 1.6.0_20-b02 OS: Windows XP Maximum slowness yet reported was 20546 ms, average is 11874
Created attachment 100337 [details] nps snapshot
From the attached snapshots it looks like a problem in org.netbeans.modules.editor.settings.storage.preferences.PreferencesImpl.removeNodeChangeListener()
All snapshots are older than 24months.