Polish Fruitcake-Keks

I have posted this recipe in Polish (http://bochenkowo.blogspot.com/2010/05/keks-ku-pamieci-mamy.html) and I've decided it is worth sharing with people around the world.

250 g all-propose flour
150 g unsalted butter
100-120 g sugar
5 eggs ( yolks and whites separated)
350g  mix of dried fruit, nuts and candied orange peel,chopped
2 teaspoon baking powder
4 tablespoon rum
pinch of salt
bread crumbs and butter to grease a loaf  pan (11,7 x 4,4 x 3 inch  )
* a 9 x 5 x 3 inch loaf pan may be too small

Soak dried fruit and nuts in hot water for 20 minutes, drain and chop. Mix soaked fruit with rum and set aside.Sift together the flour, baking powder and salt.In a separate bowl, cream the butter, sugar and yolks (add the yolks in one at a time, mixing well after each addition).Slowly add flour mixture to the creamed mixture, mix thoroughly.Beat egg whites.and add to the batter.Coat  soaked fruit and chopped nuts with extra  teaspoon of flour. Stir in the batter.Put batter into the pan and smooth.Bake at 350 F for 45 minutes until an  inserted wooden pick comes out clean.