Well, you will not be able to change the download prefs anyway. But,
http://www.gnutellaforums.com/genera...der-vista.html or other windows see
Fixes for Limewire when LW isn't operating as it should - Gnutella Forums & it will point you there.
Check your incomplete folder ... you may find you 'might' be downloading a different one but same item. It's not uncommon to end up with more than one incomplete file copy where LW leaves off & starts another for some odd reason.