[R] knn class probabilities

[Mike Fugate]

Good Day,

I'm using the knn function in the package class.  With k set to 3,  
the function returns proportions of 1/3, 0.5, 0.6, 2/3, 3/4, and 1.0  
for the test cases.  I don't understand how with k set to 3 the  
proportions can be anything other than 1/3, 2/3, or 1.0  I've seen  
similar inconsistencies with k set to 5.

R version 2.5.0 with redhat linux.

Thanks in advance.

Mike