Fix for PLUTO-568: Request attributes with javax not getting namespaced and hence colliding I've solved this by now only excluding attributes starting with "javax.servlet." as those are really reserved for the underlying servlet container itself. Namespacing other attribute names *should* not cause side-effects. Note: this is only a change specific to Pluto Portal Driver, not the portlet container (which does not concern itself with this functionality).
portals/pluto/trunk/pluto-portal-driver-impl/src/main/java/org/apache/pluto/driver/services/container/PortletRequestContextImpl.java