Contact export not possible

Contact export not possible

From Contacts:
I have checked the following (When I try to export one or any selected quantity) of contacts):
First I check the checkbox (or select all) to select the contact(s), and the checkbox gets marked, but ... as soon as I press 'Export' Button, the contact(s) get unchecked (cleared) and of course if I continue with the export, the result is file of length zero...
�Something wrong in the javascript?
It happens in IE 6.0.XXXXXX (upated to the latest)

Can you reproduce it?