Hello!
I have this problem: I have written a DVD-R under GNU/Linux. When I try to read it, under GNU/Linux it reads it slow (5 MB/s) and under Windows it does not see it.
I searched the Internet, but could not find a solution to my problem.
I did the operation twice, on two DVD-s, the same problem persists.
Should I change in K3b options the "Multisession" from Auto to None?
Problem solved: I need to disable option Multisession (select None instead of Auto).