On Mon, 22 Feb 2010 12:04:05 -0800 (PST), Bear
wrote:

Help please....! I've tried lightening the load in the
wardrobe but this has made some, although little difference. The
problem still exists.

Line the wardrobe with polystyrene ceiling tiles. Put ventilation in
the doors so the wardrobes are at room temperature. If the external
vents you mention vent into the wardrobe that will be a major factor
in causing the damp and they should be blocked. If needed for other
reasons (such as open gas fires) reinstate them somewhere else.