Aspect ratio may change during commercial. (1 Viewer)

[Al_Capone]

MediaPortal Version: 1.1.2 (stable, no SVN)
MediaPortal Skin: BlueTwoWide
Windows Version: XP, SP3
CPU Type: AMD Athlon II X3 415e
HDD: OCX SSD 128GB
Memory: 4GB
Motherboard: Aopen
Video Card: Nvidia 8400GS
Video Card Driver: 266.58
Sound Card: Realtec HD Audio
Sound Card AC3: not in use
Sound Card Driver: 5.10.0.5636
1. TV Card: Digital Everywhere FloppyDTV
1. TV Card Type: DVB-S2
1. TV Card Driver: FW Ver.: 1.5.2 Build 30740 Driver : 5.0 (6201-3000)
2. TV Card: Digital Everywhere FloppyDTV
2. TV Card Type: DVB-S2
2. TV Card Driver: FW Ver.: 1.5.2 Build 30740 Driver : 5.0 (6201-3000)
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: ffdshow-rev3721_20110107_clsid_icl10
MPEG2 Audio Codec: ffdshow-rev3721_20110107_clsid_icl10
h.264 Video Codec: ffdshow-rev3721_20110107_clsid_icl10
Satelite/CableTV Provider: Canal Digital 2W (nordic)
HTPC Case: -
Cooling: 12cm quiet fan
Power Supply: Epsilon 600W (huge overkill, I know)
Remote: Firefly
TV: Monitors+projector, no TV
TV - HTPC Connection: DVI

My wife observed this, and I can confirm that it happens - I've seen it:
-If a 4:3 program is on, black vertical bars are on both sides, ad expected. (zoom=normal)
-During commercial break, widescreen content is sent.
-After the commercial, the 4:3 program is zoomed in to, almost no vertical black bars remain, - no zoom mode is ok.
-toggling tv between fullscreen/window does not help.
-switching TV off, then on, (using TV off/on) - fixes the problem instantly.
-I've also tried to use another MPEG codec, it did not help.