This bug was originally marked as duplicate of bug 189907, 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 (Build 201302132200)
VM: Java HotSpot(TM) 64-Bit Server VM, 23.7-b01, Java(TM) SE Runtime Environment, 1.7.0_17-b02
OS: Windows 8
GUEST: Searching network for glassfish java executables in windows explorer
Maximum slowness yet reported was 30065 ms, average is 30065
Created attachment 134706 [details]
We won't be able to resolve this in 7.4, there is not enough time to rewrite wizard now.
Report from old NetBeans version. Due to code changes since it was reported likely not reproducible now. Feel free to reopen if happens in 8.0.2 or 8.1.