Keyboard / Remote problems after MP screen save (1 Viewer)

[rsbrux]

MediaPortal Version: 1.0.2
MediaPortal Skin: Blue3 Wide
Windows Version: XP SP3 MCE RU2
CPU Type: Intel Pentium 4 @3 GHz
HDD: Samsung HD154UI 1500GB
Memory: 3 GB DDR 400 DIMM
Motherboard: FIC P4M-915GD1-LF
Video Card: Club HD3450 256MB DDR2
Video Card Driver: ATI Radeon 3450 8.493.0.0
Sound Card: Realtek High Def. Audio
Sound Card AC3: no AC3
Sound Card Driver: 5.10.0.5319
1. TV Card: Hauppauge HVR-1300 MCE
1. TV Card Type: hybrid (only analog section in use)
1. TV Card Driver: 2.119.25023.0
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
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: ATI / Intervideo
MPEG2 Audio Codec: dscaler / MPC-MPA / Monogram
h.264 Video Codec: ATI 8.12
Satelite/CableTV Provider: Telezug (WWZ) Switzerland
HTPC Case: FSC Scaleo E (FIC Spectra)
Cooling: OEM
Power Supply: OEM
Remote: PDAwin.com TVRC 5.5
TV: InFocus TD40
TV - HTPC Connection: DVI


I have the MP screen saver set for the default of 5 min. to prevent burn-in of my screen.
When it goes into screen save mode, it stops responding to most keys.
I can only revive it with mouse movements or with the MCE remote BACK button.
My keyboard doesn't seem to work at all.
Furthermore, even after the display is reactivated, MP remains unresponsive (except to MCE remote BACK).
It appears that MP has lost focus, perhaps to the MP Watchdog, which is the only other application running.
IAC, I can get things to work normally again by using Alt-TAB on the keyboard to restore focus to MP.
Any tips as to possible cause and/or corrective measures would be most welcome!
Didn't attach logs, aince they can't record the absence of an event!