Samsung UE40D7000 can not connect to serviio

Hi!
I installed serviio on my debian pc a few days ago and everything went fine. My tv was detected and I could stream my video files.
Yesterday I noticed that the message which pops up when serviio starts and detect my tv was missing. Now I don't get it to work again.
I turned detailed logging on and my logfiles says now:
2012-08-07 11:05:58,634 DEBUG [WebServer] Incoming connection from /192.168.178.8:52986
2012-08-07 11:05:58,636 DEBUG [RendererDAOImpl] Reading a Renderer with ip address 192.168.178.8
2012-08-07 11:05:58,637 DEBUG [DeviceDescriptionRequestHandler] Device /192.168.178.8 does not have access to the server, returning 403
2012-08-07 11:05:58,734 DEBUG [WebServer] Incoming connection from /192.168.178.8:37247
2012-08-07 11:05:58,735 DEBUG [RendererDAOImpl] Reading a Renderer with ip address 192.168.178.8
2012-08-07 11:05:58,737 DEBUG [DeviceDescriptionRequestHandler] Device /192.168.178.8 does not have access to the server, returning 403
2012-08-07 11:05:58,835 DEBUG [WebServer] Incoming connection from /192.168.178.8:57959
2012-08-07 11:05:58,836 DEBUG [RendererDAOImpl] Reading a Renderer with ip address 192.168.178.8
2012-08-07 11:05:58,837 DEBUG [DeviceDescriptionRequestHandler] Device /192.168.178.8 does not have access to the server, returning 403
2012-08-07 11:05:59,834 DEBUG [DiscoveryAdvertisementNotifier] Will advertise again in 00:00:36
I installed serviio on another debian machine here and it worked immediately. The popup on the tv showed up, I pushed OK and I could see the content.
I also removed the complete serviio folder on the affected pc and installed it again. No change.
192.168.178.8 is my tv. Serviio is running at 192.168.178.4. Is the tv blocking serviio or is serviio blocking my tv? The WebUI v 1.0 is seeing my tv, no problem.
So, what happened? Any help would be appreciated.
Thanks in advance.
pharyx
I installed serviio on my debian pc a few days ago and everything went fine. My tv was detected and I could stream my video files.
Yesterday I noticed that the message which pops up when serviio starts and detect my tv was missing. Now I don't get it to work again.
I turned detailed logging on and my logfiles says now:
2012-08-07 11:05:58,634 DEBUG [WebServer] Incoming connection from /192.168.178.8:52986
2012-08-07 11:05:58,636 DEBUG [RendererDAOImpl] Reading a Renderer with ip address 192.168.178.8
2012-08-07 11:05:58,637 DEBUG [DeviceDescriptionRequestHandler] Device /192.168.178.8 does not have access to the server, returning 403
2012-08-07 11:05:58,734 DEBUG [WebServer] Incoming connection from /192.168.178.8:37247
2012-08-07 11:05:58,735 DEBUG [RendererDAOImpl] Reading a Renderer with ip address 192.168.178.8
2012-08-07 11:05:58,737 DEBUG [DeviceDescriptionRequestHandler] Device /192.168.178.8 does not have access to the server, returning 403
2012-08-07 11:05:58,835 DEBUG [WebServer] Incoming connection from /192.168.178.8:57959
2012-08-07 11:05:58,836 DEBUG [RendererDAOImpl] Reading a Renderer with ip address 192.168.178.8
2012-08-07 11:05:58,837 DEBUG [DeviceDescriptionRequestHandler] Device /192.168.178.8 does not have access to the server, returning 403
2012-08-07 11:05:59,834 DEBUG [DiscoveryAdvertisementNotifier] Will advertise again in 00:00:36
I installed serviio on another debian machine here and it worked immediately. The popup on the tv showed up, I pushed OK and I could see the content.
I also removed the complete serviio folder on the affected pc and installed it again. No change.
192.168.178.8 is my tv. Serviio is running at 192.168.178.4. Is the tv blocking serviio or is serviio blocking my tv? The WebUI v 1.0 is seeing my tv, no problem.
So, what happened? Any help would be appreciated.

Thanks in advance.
pharyx