TVServer dissapears

[Nightflyer]

TV-Server Version: svn Rev14058
MediaPortal Version: svn Rev14058
MediaPortal Skin: Blue Two Wide
Windows Version: Windows XP Home SP2
CPU Type: Intel Core 2 Duo E6300
HDD: Samsung SpinPoint T133 (400 Gb, sata II)
Memory: 2 Gb (2*1 Gb DDR2 800Mhz)
Motherboard: Intel DQ965GF
Motherboard Chipset: Intel Q965
Motherboard Bios:
Video Card: Asus GeForce 7600GS Top Silent
Video Card Driver:
Sound Card: Integrated to MoBo (SigmaTel* STAC9227)
Sound Card AC3:
Sound Card Driver:
1. TV Card: Technotrend 1500-C
1. TV Card Type: DVB-C
1. TV Card Driver: BDA 4.4.10.18
2. TV Card: Technotrend 1500-C
2. TV Card Type: DVB-C
2. TV Card Driver: BDA 4.4.10.18
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: MPV
MPEG2 Audio Codec: MPA
Satelite/CableTV Provider: Welho (Helsinki,Finland)
HTPC Case: Antec Fusion
Cooling: 2*12cm Antec case fans, Silverstone Nitrogon CPU cooler
Power Supply: Antec, 430W ATX
Remote: Logitech S510 Media Remote
TV: Hyundai Q321
TV - HTPC Connection: DVI-HDMI

Single seat setup.

I've had this happening couple of times, with different svn's.
I'm just watching TV, not doing anything else. TV screen suddenly dissapears and MP client goes to server selection screen. Not able to get out of this screen. I have then closed MP client, launched TVServer config (doesn't give message about starting server) and then launching MP Client again, TV is up and running again.
It seems, that my WLAN connection has breaked at same time (or at least it is opening the connection again).

I've attached all logs. This break happened around time 2007-04-19 22:27:40

UPDATE: Message MP gives: "Connected to database, unable to connect to server"