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Created attachment 134384 [details] stacktraces During file opening there are several places where IDE access file system from EDT, this may cause UI freeze if project is located on slow filesystem, e.g. NFS.
It is much worse than it was before, probably because of the fix for bug 228448: http://hg.netbeans.org/cnd-main/rev/251074 Now there are much much more calls to updateName.