This bug was originally marked as duplicate of bug 194847, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE Dev (Build 20111208-9a6d846d5dc2)
VM: Java HotSpot(TM) Server VM, 20.4-b02, Java(TM) SE Runtime Environment, 1.6.0_29-b11
vv159170: opening file
Maximum slowness yet reported was 3126 ms, average is 3126
Created attachment 113950 [details]
EDT is waiting for Logger to finish - probably due to too many log messages being printed out. Nothing to fix here.