Note: This is neither my wimpy netbook nor the school computer with the bad drivers that I mentioned on IRC! This is a different computer (my Toshiba laptop) that runs GAE 0.3 with excellent speed.
When starting Megaglest, it runs very slowly. Even in just the menu, I get <1fps. With GAE 0.3, it runs flawlessly. When I finally got to start a game (this took a few minutes), it runs just as slow. As you can see here in the screen shot, it's still <1fps, and even after 310 frames, the ground textures didn't load. I've tried both 3.3.6 and 3.3.7-beta1, with the same results.
I'm running Linux Mint 32 bit off of my USB stick on a Toshiba laptop with built-in Intel hardware.
Here's the output when I run lspci:
http://pastebin.com/cEy3T7MD