If you find the answer to problem 2 then please pass it on to me lol
Did searching in greek work ok in version 4.9 or didn't you try?
LW will generally search & find the local dialect, so if you are in a majority english speaking area it will search mostly in that area.
Try searching a reknown greek spoken file such as a song or ..., after that you can browse or attempt to browse that host. This will help you to connect to more greek speaking people. Then try your searches again.