In the last few days I finally found the time for fiddling with my Cubietruck again. I switched the harddisk for a small SSD I had laying around. Now it makes no noise at all.
After experimenting with Lubuntu for Cubietruck and not being satisfied with the newer "official" choices I decided to go with Igor's Debian Build. Wheezy is showing its age and with Jessie around the corner I chose the Jessie build - excited for systemd. The NAND-install script worked for me at the first try, perhaps because I've already had Lubuntu installed from my former experiments with the cubietruck,