Boo Reeves

http://imgur.com/a/kUyEx Here is an imgur of what I'm experiencing. Just threw it together. Maybe it will help. I'm using Tekkit 1.0.6

When I'm in a hallway or a large room, even if it is extremely well lit/full of lava, only certain portions of the room are actually lit. When I move around the room, it becomes extremely dark, even when standing right beside a torch. In another area of the room, the entire room looks illuminated. I've tried adjusting all my base settings, but to no avail. Friend on my server is having the same issue. Any idea?