I see the bug, but don't seem to have an .X exporter in Blender. Where did you get yours from?
Blender does have a .x exporter but it's not enabled by default. You have to enable it in File->User Preferences->Addons->Search for "directx"
edit: If you still have a dxviewer from old Microsoft sdk's you can also try how it looks in there.
I remember I used to use it to fix some texturing problems (import->export), but I don't have dxviewer anymore. Anyway, it would be nice to figure out why exporting directly from Blender doesn't work. Especially that it seems that only 2 bones act weird - it seems that both feet have some position offset (they are still animated but at incorrect position).
Is this the animation or the initial pose? It looks as if you have *fixed* your model with a keyframe.
It's an animation playing (walk1), not an initial pose. Animation almost works - the only problem is these feet which are at incorrect position. I tried all options combinations while exporting from Blender and the only one that worked (zombie didn't look like a condensed zombie ball) is the one shown in the first post.