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it just hang in startup https://youtu.be/8WcJjUtLUvk
see this video too https://youtu.be/FUCJsWwfV0A
Please attach full thread dump taken after NetBeans hang. http://wiki.netbeans.org/GenerateThreadDump
Created attachment 163047 [details] var/log var/log, i create full dump later
Created attachment 163064 [details] jstack files
Created attachment 163065 [details] jstack files
see this too https://youtu.be/gt8x5T-Dils
one more hints, every time i delete the config directory, netbeans back to works, please see attachment.
Created attachment 163095 [details] This is the config folder, if i delete it, netbeans startups successfully