There were none for a long time but from beginning of this week people
have are coming here and have offering me their old 1 GB DDR RAM
moduli. Some of them worked so at the moment my Ultra 20 has all slots
populated (and I have further two as pares). What a change!
So once more it has the full set of 4 GB of RAM (4x 1 GB). It does not
sound to be so much today but for a computer from late 2005 it is
enough.
I also have got a new DVD-ROM. It does not fit the case but it will be
useful when I decide to do a clean install (I think that I should give
the Void Linux a try).