The latest firmware (v1.80) for PS3 added support for DLNA compliant media servers. The documentation specifically mentions DLNA3.
I updated one of my PS3s a moment ago to try it out with NV+. I've got plenty of video files in various formats on NV+, but PS3 refused to play any of them. It does, however, find both my NV+ boxes very quickly and is able to browse the directory tree without problems.
Entering each directory, PS3 first lists a bunch of files, all named "Unsupported format". When one tries to play any of them, an error message pops up, to the effect of "media server disconnected" or something along those lines.
After that the name of the file is suddenly displayed correctly. PS3 is still unable to play it, though, and complains about the media server.
Infrant, care to comment on the DLNA compliancy of NV+?