You just change your sources in /etc/apt/sources.list to potato stable: deb ftp://http.us.debian.org/debian/ potato main contrib non-free deb-src ftp://http.us.debian.org/debian/ potato main deb http://non-us.debian.org/debian-non-US potato/non-US main deb-src http://non-us.debian.org/debian-non-US potato/non-US main
and do the apt-get dist upgrade (which should downgrade you) I think this is what I did when I went back from woody to potato for the same reasons. I still have some trouble with woody stuff that is still on the PC (perl too new) etc. D. Ghost