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This bug was originally marked as duplicate of bug 191777, 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 Beta 2 (Build 201211062253) VM: Java HotSpot(TM) Client VM, 16.0-b13, Java(TM) SE Runtime Environment, 1.6.0_18-b07 OS: Windows NT (unknown) Maximum slowness yet reported was 34351 ms, average is 34351
Created attachment 128590 [details] nps snapshot
The snapshot shows just 1.6s, not 34s. Making P4. All the time seems to be taken by org.netbeans.modules.form.palette.PaletteUtils.getAllItems() 100.0 1,362 ms (100%) 661 ms waiting for I/O. Probably you want to compute the I/O first and only then update the icons.
Created attachment 138011 [details] nps snapshot creating a new web project from existing sources