DreamPlug -- first encounter

I bought a DreamPlug plug computer from www.newit.co.uk back in May and finally got round to plugging it in over the weekend.  The plug boots Ubuntu 9.04 Jaunty Jackalope from an internal uSD card, and starts up a WiFi AP straight away - SSID is DreamPlug-uAP-nnnn where nnnn is the last 4 digits of the MAC address.  After connecting to this you can ssh to the machine and login as root with a password of nosoup4u, and you can point a web broswer at the IP address to see the Lighttpd web server.

Forums are found at www.newit.co.uk/forum.  One handy post highlights a configuration problem with the package repository for Jaunty, which Canonical have moved.  It is fixed as follows:

cat > /etc/apt/sources.list << EOF
deb http://old-releases.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
EOF

apt-get update

I tried that and it seemed to work okay.  (Incidentally, the URL was previously http://ports.ubuntu.com/).  Now for the tricky bit - update all the packages.  Here we go...

apt-get -u upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be upgraded:
  bzip2 cron dhcp3-client dhcp3-common dpkg file gzip language-pack-en
  language-pack-en-base libbz2-1.0 libcurl3-gnutls libgnutls26 libkrb53
  libldap-2.4-2 libmagic1 libnewt0.52 libpam-modules libpam-runtime libpam0g
  libsasl2-2 libsasl2-modules libsqlite3-0 libssl0.9.8 libvolume-id1 libxcb1
  lsb-base lsb-release ntpdate openssl perl perl-base perl-modules sudo udev
  whiptail
35 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 17.4MB of archives.
After this operation, 1528kB of additional disk space will be used.
Do you want to continue [Y/n]? y

That worked too!  Now, what shall I do next?