rjm, that's done as well.
Jim, no virus checker at all in this computer, it's protected by an outside firewall and used only for the home theater. And the gigabit network is not the problem. To be sure about that I copied the MKV from the network drive to the local S-ATA drive, and that didn't change anything.
raym, it loads Haali. I've tried with different renderers as well, but no change there either. Here's my graph:
Filter 'S/PDIF Pass-through Device (ASU'
CLSID: {E30629D1-27E5-11CE-875D-00608CB78066}
Host: C:\Windows\system32\quartz.dll
Input Pin 'Audio Input pin (rendered)'
Connected to pin 'Out' of filter 'AC3Filter'
Major type MEDIATYPE_Audio Sub type MEDIASUBTYPE_PCM, Format type FORMAT_WaveFormatEx
Filter 'Enhanced Video Renderer'
CLSID: {FA10746C-9B63-4B6C-BC49-FC300EA5F256}
Host: C:\Windows\System32\evr.dll
Input Pin 'EVR Input0'
Connected to pin 'Output' of filter 'DirectVobSub (forced auto-loading version)'
Major type MEDIATYPE_Video Sub type MEDIASUBTYPE_YUY2, Format type FORMAT_VideoInfo2
Input Pin 'EVR Input1'
Filter 'AC3Filter'
CLSID: {A753A1EC-973E-4718-AF8E-A3F554D45C44}
Host: C:\Program Files\AC3Filter\ac3filter.ax
Input Pin 'In'
Connected to pin 'Audio' of filter 'Haali Media Splitter'
Major type MEDIATYPE_Audio Sub type MEDIASUBTYPE_DOLBY_AC3, Format type FORMAT_WaveFormatEx
Output Pin 'Out'
Connected to pin 'Audio Input pin (rendered)' of filter 'S/PDIF Pass-through Device (ASU'
Major type MEDIATYPE_Audio Sub type MEDIASUBTYPE_PCM, Format type FORMAT_WaveFormatEx
Filter 'DirectVobSub (forced auto-loading version)'
CLSID: {9852A670-F845-491B-9BE6-EBD841B8A613}
Host: C:\Program Files\DirectVobSub\VSFilter.dll
Input Pin 'Video'
Connected to pin 'Video Output 1' of filter 'Microsoft DTV-DVD Video Decoder'
Major type MEDIATYPE_Video Sub type Unknown GUID Name: {30323449-0000-0010-8000-00AA00389B71}, Format type FORMAT_VideoInfo2
Output Pin 'Output'
Connected to pin 'EVR Input0' of filter 'Enhanced Video Renderer'
Major type MEDIATYPE_Video Sub type MEDIASUBTYPE_YUY2, Format type FORMAT_VideoInfo2
Input Pin 'Input'
Connected to pin 'Subtitle' of filter 'Haali Media Splitter'
Major type MEDIATYPE_Text Sub type TIME_FORMAT_NONE, Format type TIME_FORMAT_NONE
Input Pin 'Input'
Filter 'Microsoft DTV-DVD Video Decoder'
CLSID: {212690FB-83E5-4526-8FD7-74478B7939CD}
Host: C:\Windows\System32\msmpeg2vdec.dll
Input Pin 'Video Input'
Connected to pin 'Video' of filter 'Haali Media Splitter'
Major type MEDIATYPE_Video Sub type Unknown GUID Name: {31435641-0000-0010-8000-00AA00389B71}, Format type FORMAT_MPEG2_VIDEO
Input Pin 'Subpicture Input'
Output Pin 'Video Output 1'
Connected to pin 'Video' of filter 'DirectVobSub (forced auto-loading version)'
Major type MEDIATYPE_Video Sub type Unknown GUID Name: {30323449-0000-0010-8000-00AA00389B71}, Format type FORMAT_VideoInfo2
Output Pin '~Line21 Output'
Filter 'Haali Media Splitter'
CLSID: {55DA30FC-F16B-49FC-BAA5-AE59FC65F82D}
Host: C:\Program Files\Haali\MatroskaSplitter\splitter.ax
Output Pin 'Video'
Connected to pin 'Video Input' of filter 'Microsoft DTV-DVD Video Decoder'
Major type MEDIATYPE_Video Sub type Unknown GUID Name: {31435641-0000-0010-8000-00AA00389B71}, Format type FORMAT_MPEG2_VIDEO
Output Pin 'Audio'
Connected to pin 'In' of filter 'AC3Filter'
Major type MEDIATYPE_Audio Sub type MEDIASUBTYPE_DOLBY_AC3, Format type FORMAT_WaveFormatEx
Output Pin 'Subtitle'
Connected to pin 'Input' of filter 'DirectVobSub (forced auto-loading version)'
Major type MEDIATYPE_Text Sub type TIME_FORMAT_NONE, Format type TIME_FORMAT_NONE