Just created the related issue: https://issues.apache.org/jira/browse/PIVOT-872
Note that even in Windows this happens, so it's really something related to JDK 7 Update 7. I think they (Oracle) have changed something inside the plugin.jar classes, probably in the JSObject class. I'll start to work on this, but if someone has comments/suggestions, please post (here and/or in the issue). Bye, Sandro
