Odd bug preventing me from playing...

[sillysaurus 0]

After I connect to a nighttime server, my game looks like this: http://i.imgur.com/FBnbrKK.png

 

My graphics card is a 7970.  It runs other games just fine, no corruption.  I'm inclined to think it's some kind of driver or shader bug?

 

Has anyone experienced this before?

[sillysaurus 0]

Uh, well, the bug seems to have disappeared, maybe.  But the server became daytime in the meantime, so maybe it only happens at night.  I'll post again later if I see it...

[sillysaurus 0]

Although, my startup screen looks like this... this is wrong, correct?