problem installing Kaffeine, freeing space on flash drive

[kl522]

If I'm stuck having all that space taken for the /usr/share/doc directory, I guess I'll just have to live with it.

Not necessarily so.

You will have to check if that resides in the readonly file system or the readwrite persistent store. Those in the readwrite persistent store, you can delete them, that will indeed free up some space for you.

The ones in the readwrite peristent store are, /KNOPPIX-DATA/usr/share/doc
The ones in the readonly compressed image, /KNOPPIX/usr/share/doc

Also, it will be unlikely ( not totally impossible !) that you will be able to find knoppix 6.3.1. Because that's something attached to a magazine. You will have to buy the magazine to get it.