I'm using Windows XP Home Edition, ATI Radeon HD3800, the latest Catalyst 10.6, and having the following graphical issues:
With Advanced Lighting turned on, everything appears murky brown with indistinct outlines. With Advanced Lighting turned off, things look much better, but then after opening the technologies screen or kingdom screen, strange glitches remain projected over the map.
dxdiag <script src="//pastebin.com/embed_js.php?i=SyvnkGxw"></script>
debug.err http://pastebin.ca/1890466