We tested for other .deb packages downloaded from official Ubuntu repositories:
abiword_2.9.2+svn20120603-1_amd64.deb ffmpeg_0.8.3-0ubuntu1_amd64.deb audacious_3.2.3-1_amd64.deb
All give `The package is of bad quality' error on installing via USC.
We tested for other .deb packages downloaded from official Ubuntu repositories:
abiword_ 2.9.2+svn201206 03-1_amd64. deb 0.8.3-0ubuntu1_ amd64.deb 3.2.3-1_ amd64.deb
ffmpeg_
audacious_
All give `The package is of bad quality' error on installing via USC.