Its the Unreal Engine's fault. It does the same thing in Gears of War. The Engine just does not completely load the textures. You either have to wait until it does or interact with something or restart the level (restart from checkpoint).
[Edited by SideFX, 6/26/2010 7:34:33 AM]
True, same thing happened in bioshock2, too.
bioshock 2?
nope i dont had that problem but you may need to hold on until engine load
gamecopyworld has a fix for it weighing in 5.4 MB. Hope that helps
how exactly is the address? Can U post a link please.