Specular on textures help.

Artwork Blender Tests
1

I have applied a specular map to the walls in this hall but for some reason it has this glitch.
I am unsure how to fix it, any help will be appreciated.

http://i100.photobucket.com/albums/m40/Umbra_2006/Error.jpg

2

I suppose “repeated” is not set in the specular map but yes in the diffuse?