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org.openide.explorer.ExplorerPanel: Does not implement Accessible Null accessible name
Add accessibility to the TopComponent.
It seems like fixed http://www.netbeans.org/source/browse/openide/src/org/openide/windows/TopComponent.java.diff?r1=1.63&r2=1.64 - verified
Resolved for 3.4.x or earlier, no new info since then -> closing.