Came back to try linuxcoin again after few weeks. Still as broken and i guess 'final' means no more support ?
vnc works only after opening remote desktop window. persistence works but vnc only starts working after i open that window. which makes it pointless.
wiki instructions on ssh x11 forwarding are out of date / broken / whatever:
sudo xauth merge /home/user/.Xauthority  - Xauthority does not exist, on second try it was empty.
it cant install deb's too.
and then i did apt-get update. lol. thats ... long. and it couldn't finish it.
another problem: unetbootin cant download it, tried 3 times, server is too slow or something ? anyway it cant finish download.

edit: I have found likely problem i had, flash drive had second partition with probably old linuxcoin on it, that was probably the reason for all the bugs i had.