HL2 model view doing something weird

[Draco]

Here's the deal:

I used Half-Life 2's model viewer last night, and it worked fine.

Now, something broke. All the models don't center in the viewpanel, and had odd little scanlines over the entire thing.

Here's a picture -

http://home.comcast.net/~chrismb/error.jpg

The only unqiue thing I did this time was load the Face Poser thing, and it had the same problem. Everything else on my system is unchanged.

[PlayfulPuppy]

That's... odd. Looks to me like the D3D backbuffer isn't registering to the correct screen pitch.

I know you said you didn't change anything, but have you tampered with your video resolution/settings or installed new drivers recently? New DirectX version? Just t'be sure.