Bug#586434: Let's clean the apt cache

[Petter Reinholdtsen <pere@hungry.com>]

[Martin Michlmayr]
> I've done it after you get the "Installation complete" message.
> Can you confirm that this is late enough?

Yes.  The last Debian Edu script is at 13debian-edu-profile-udeb
before the installation complete message.  The LTSP build is done in
its own udeb between pkgsel and finish-install.

But I would suggest to move it even later, perhaps as late as 60, just
after the backup network setup is done.

Happy hacking,
-- 
Petter Reinholdtsen