Asking to delete downloaded debs

[Bob Nielsen <nielsen@primenet.com>]

I have two potato systems.  On the one I most recently upgraded,
running dselect with the apt method, I get asked "Do you want to erase
the downloaded .deb files (Y/n)?" On the other system, I am not asked,
but I would like to change that.  I have been unable to find what
configuration setting affects this.  Can anyone point me to the correct
place?

Bob

-- 
Bob Nielsen                 Internet: nielsen@primenet.com
Tucson, AZ                  AMPRnet:  w6swe@w6swe.ampr.org
DM42nh                      http://www.primenet.com/~nielsen