If up2date hits a package during the download phase that is already cached,
eg because /var/spool/up2date is shared, or from a prior up2date being killed
before finishing installing it prints
Gtk-CRITICAL **: file gtkprogress.c: line 518 (gtk_progress_set_percentage):
assertion `percentage >= 0 && percentage <= 1.0' failed.
for each such package.
This seems to have done no actual harm
heh, lovely warning
This is fixed in the 7.3 errata.