Index: bk_manager/trunk/ui/MainWindow.py
===================================================================
diff --git a/bk_manager/trunk/ui/MainWindow.py b/bk_manager/trunk/ui/MainWindow.py
--- a/bk_manager/trunk/ui/MainWindow.py	(revision 7)
+++ b/bk_manager/trunk/ui/MainWindow.py	(revision 8)
@@ -50,6 +50,8 @@
         """
         Slot documentation goes here.
         """
+        
+        
         var_Dpath=self.txtDpath.text()
         p1= Popen(['find', var_Dpath, '-name', '*.r'], stdout=PIPE)
         p2= Popen(['awk', '-F/', '{print substr($NF,2,7)}'], stdin=p1.stdout, stdout=PIPE)
@@ -60,6 +62,8 @@
         for i in range(0, len(output_p2)/8):
             var_list.append(output_p2[8*i:8*(i+1)-1])
         
+        self.lstStartDay.clear()
+        
         for i in var_list:
 #            self.txtInfo.append(i)
             self.lstStartDay.addItem(i)