Specifically, I've got a 128x128 texture that's scaled down to 128x96. It's acting as a mid texture. On one side, only the mid texture is visible, and on the other, the mid and lower textures are visible. The height of the sector that main sector is at 96, so there shouldn't be a problem. Yet the bottom row of pixels on the texture is cut off, leaving a space between the texture and the ground.
So I've uploaded a small portion of the map that uses said texture. Everything that could possibly be related is in there. And I've already checked with r8, and it's still cutting the texture off. And I've tried it on two computers, one with an Intel 915GM integrated video card, and one with a nVidia GeforceGo 7600. So I'm pretty sure it wouldn't be a driver problem.
Oh, and a probably unrelated bug, but on my computer with the Intel card, if you NOCLIP past the gate in the attached wad, and look at the opposite wall, the texture appears to be blurry. Doesn't happen on the nVidia computer, so that very well may be driver related, but still odd. Since I'm not sure if it'd show up on other computers, here's a screen:

And that's with no texture filtering. Odd.