This bug was originally marked as duplicate of bug 190077, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE 7.3 RC1 (Build 201301240957)
VM: Java HotSpot(TM) Client VM, 23.6-b04, Java(TM) SE Runtime Environment, 1.7.0_11-b21
Maximum slowness yet reported was 23630 ms, average is 23630
Created attachment 131120 [details]
*** This bug has been marked as a duplicate of bug 190077 ***