Sort problem with DefView on vista   

I have a NSE witch works fine on XP. But on vista, the first column can not 
be sorted by click column header or  menu item. The other columns can. 
Besides when in group mode, the first column can sorted. Why?  is there 
someone meet the same broblem?

url:http://www.ureader.com/gp/1660-1.aspx

date: Thu, 6 Mar 2008 14:30:36 +0800   author:   sunshine