i use thunar, i tried the GUI way of changing permissions recursively, but that won't work, or only on a couple of files.

i tried doing the command line way also, with same results.

its the same with different dvd or cd discs.

i have dropbox installed, but i may have had the problem before that.

i use k3b, have tried both linux only format for disc, and windows friendly format, doesn't make a difference.

any ideas as to why this is happening, and so stubbornly? surely it is not this way for everyone?