I am not sure who the author was (I couldn't find it in my cursory look over the web page) but the instructions were here http://hvkls.dyndns.org/downloads/docum ... aller.html
- I suspect it was.
Last night I also tried an "aptitude full-install" followed by the webinstaller and running /usr/local/sbin/kernel26.sh but, while aptitude did a lot of things that apt-get dist-uprade didn't, the end result was the same - 6 red flashes.
Under what circumstances does the LinkStation decide it doesn't like the disk? If I knew this I may be able to work out what had gone wrong as I can mount the disk on another machine and examine it. I have had a quick look and the partitions look fine but perhaps the upgrade damaged the boot sector somehow.
Before I upgraded, I took an image of the first partition so restoring it to a working state is fairly easy so I don't have to go through the whole reflashing process again (which is just as well as I don't like having to use Windows unless I have to).