Black objects!

My objects are black in texture mode. As you can see from my screenshot, I have the default grey material and my image attached to that, but the object remains the same. I’ve only been having the problem for a couple of days but it’s affecting all of my blender files.
Thanks in advance.


Okay, I’ve just added a lamp and I can see the texture again but what I don’t understand is, I was texturing with no lamps with no problems up until a couple of days ago, so what could have changed?

In the properties panel under “display”, change shading to GLSL and add a lamp to the scene.