Hi,
I have not heard of this being an active issue, nor am i too sure if this would be considered a defect due to the qualified effect of having the DMZ firewall.
Yes, parts of the legacy AFDashboard components are still used behind the scenes.
There was a language dependent bug - German locale caused a problem on loading, resolved in the higher echelons of BI4.0 SP05
Also, on some UNIX platforms, not having the "name service cache daemon" (nscd) running can cause perf degradation. not sure if that applies to you.
Yes, i think it would be prudent to contact technical support, in case there are internal investigations on-going, or at least, to trigger the investigation process.
Best of luck. Do keep us informed
regards,
H