STOP Video from gdata.youtube.com (every 3-5 minutes)

Hi,

I have problem with gdata.youtube.com videos on my new TV Samsung UE32ES6800.
I use the profile Samsung TV/player C/D series, PC with XP SP3.
Every 3-5 minutes stops the video replaying (f.e. http://gdata.youtube.com/feeds/api/play ... FBD8F17C43 ; http://gdata.youtube.com/feeds/api/stan ... st_popular)
TV shows the message: Check the net connection, but the connection is OK.

The replaying of all data from HDD (mp3, avi, films, songs)= OK
Web browser and videos from browser= OK
Smart TV widgets (f.e. weather, facebook, youtube , radio, skype)= OK

I send you:

1. Serviio log
2. Wireless connection- from router TP-LINK 841ND to TV "ES" series, Serviio 0.6.2
3. OS WIN XP SP3
4. Media stored- http:// (see above)
5. I use the profile Samsung TV/player C/D series, because the profile for ES series doesn´t exist.

Thank you for help.

I would like to upgrade my first message.

Point nr. 2. I tried wired connection (LAN cable) today and the result is the same.
Video from gdata.youtube.com stops after 3-5 minutes...
Wireless + wired connection- from router TP-LINK 841ND to TV "ES" series, Serviio 0.6.2

Can you help me ?