Adding these src lines:
#trinity nightly builds deb=20 http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity-nightly-build-de= pendencies/ubuntu=20 precise main deb-src=20 http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity-nightly-build-de= pendencies/ubuntu=20 precise main
deb=20 http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity-nightly-builds/u= buntu=20 precise main deb-src=20 http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity-nightly-builds/u= buntu=20 precise main
gives me after update:
<snip>
Probably a mirror sync problem. A full rebuild occurred not that long ago so the mirror system is catching up.
I would try again in a week or so.
Tim