look for your log file on router that a port is not passing properly, if no log file shows port use see if you can change what the log file saves once you determine which port it is open access.
If not try firmware, at pioneer's web site firmware version 2.46 with the following
at this link http://www.pioneer.eu/eur/content/support/support/upgrade/BDP.html
Enhance your entertainment experience now.
Upgrade your BDP-LX91 Blu-ray Disc player and activate BD-Live to take full advantage of the interactive features of your Blu-ray Discs.
BD-Live combines content on your Blu-ray Discs with downloadable content from the internet and online connectivity with other movie fans. This means you'll be able to download images and bonus trailers, join in live chat sessions, play online games and much more, depending on the film studio's offering.
Great news if you're on the lookout for a new receiver: your upgraded BDP-LX91 will decode DTS-HD Audio to Linear PCM (LPCM) which will greatly expand your choice of receivers. And even if you don't have the latest HD audio receiver, you'll now be able to enjoy the highest quality audio.
Additionally, the upgrade will allow you to select the crossover frequency, enabling you to gain more control over your speakers. .
Download the firmware (version 2.46, size: 97 MB)
Last updated: 20 April 2009
Download the update instructions
Download the change history
How to use the new features in version 2.46 (DTS-HD support, Crossover Frequency and BD-LIVE)
Hope this helps
cryptolakeman