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Created attachment 126700 [details] Maven project to reproduce Adding/removing Maven dependency after Graph tab activation blocks the whole UI. If the Graph tab was not activated, it works fine. Probably related to http://netbeans.org/bugzilla/show_bug.cgi?id=220995. Easily reproducible with standard Maven Java SE project with Atlassian JIRA dependency. See http://screencast.com/t/TZJWciM7Nm. Note that in this case no slowness report was collected (and almost sure it should be). NetBeans Dev 201210280001, JDK 6u34 32bit
*** This bug has been marked as a duplicate of bug 220995 ***