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This issue was reported manually by thurka. It already has 1 duplicates Build: NetBeans IDE 7.0 M2 (Build 201010151251) VM: Java HotSpot(TM) 64-Bit Server VM, 19.1-b02-334, Java(TM) SE Runtime Environment, 1.6.0_24-b07-334-10M3326 OS: Mac OS X User Comments: GUEST: Closing / contracting the top level folder of the first project in the files drawer. Maximum slowness yet reported was 11139 ms, average is 11139
Created attachment 108887 [details] nps snapshot
Nodes or Explorer should have in mind that org.openide.loaders.DataFolder$FolderNode.createPasteTypes() can take a long time.
*** This bug has been marked as a duplicate of bug 192317 ***