That is kind of bizarre because disabling your plugin should have
stopped MT from looking into that directory for usable code. You may
have come across a bug in MT. Could you do this -- put the
feeds-app-lite directory back into plugins, make sure it is disable
like before and then go into the system view. Once in there under the
tools directory click System information. One screen that appears
you'll see a section labelled "Perl include path" with a listing akin
to this one:

plugins/tidy/lib
plugins/foo-social/lib
plugins/xsearch/lib
plugins/tags/lib
plugins/layouts/lib
plugins/foo/lib
plugins/contact/lib
plugins/gizmos/lib
plugins/StyleCatcher/lib
plugins/feeds-app-lite/lib
plugins/MultiBlog/lib
plugins/spamlookup/lib
plugins/Textile/lib
plugins/WXRImporter/lib
plugins/WidgetManager/lib
/usr/home/foo/public_html/cgi-bin/mt/extlib
/usr/home/foo/public_html/cgi-bin/mt/extlib
/usr/home/foo/public_html/cgi-bin/mt/lib
/usr/local/lib/perl5/5.8.8/i386-freebsd
/usr/local/lib/perl5/5.8.8
/usr/local/lib/perl5/site_perl/5.8.8/i386-freebsd
/usr/local/lib/perl5/site_perl/5.8.8
/usr/local/lib/perl5/site_perl

The question I have is: is feeds-app-lite still listed even though it
is disable?

<tim/>

--
Timothy Appnel
Appnel Solutions
http://appnel.com/