Hi.
I am in Kubuntu 12.10 and Blender 32 bits
That´s the question... (sorry for my english)
I uv map a face of a cube and then go to "P". No render in real time. Anyaone of these cases works:
- No material assigned (Blender assigns default settings)
- Material assigned and Face texture on

But:
- if i uv map a plane... it works
- if i remove all faces of the cube unless the uv mapped... it works !!!¿??¿¿¿!!

It sounds like a drastic bug. Isn´t it?

this problem continues in 2.65a

Just visit our bug tracker to submit reports.
http://projects.blender.org/tracker/?atid=498&group_id=9&func=browse

Read the reporting guidelines carefully please. We need a case other people can redo clearly.

You can also first ask on www.blenderartists.org, to get feedback if you have bug or if this is something else.

UV and texture anf game features are handled by other people, not me