3.1.8 (Build 2901) Bug Report: can't click

Name: Stephane Mocret
Date:28/01/2011
Software Version and build number: 3.1.8 (Build 2901)
Number of displays: 0
Connected USB Devices: 0
Networked Devices: 0

Setup
show
merge show
begin
click with right button on a folder
select delete
Can't click on Ok or Cancel on "delete (are you sure) window, I must close the merge show window by clicking on up right window cross.

Same with 3.1.7
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