Some people want a recent libtorrent (in this case the 0.12.9 sources from openSUSE 12.1) patched with the no-upload-patch made public on
http://citylight.thinkbay.net/Disable_sharing_in_rtorrent
Here you go: libtorrent-0.12.9-no_upload.tar.gz
Just tar xvfz, ./configure, make and make install.
Careful: Disables upload for all aplications using libtorrent with all consequences (superseeding!)