I think the menu problem is more to do with the remote controls we all have and whether the instructions burned into the disc are the same as we give via the remote. Some return to the menu using one key on a Toshiba for example and a similar key fails to react on another brand.
okay... When i tested this sometime ago i had varying results. I know that this is an ongoing issue for many - so i'll raise the matter again.
If you have a universal (do away with the multitude of remotes) programmable remote please check and let me know what results you get.
Dafydd