I contacted the author who added the 0.6.2 version into maemo extras-devel about the segmentation fault, and he said he has the same issue and don't know what causes it.
On the other hand, the same package works on my friends N810. We have no idea what's going on with this
So again I was playing around with the devel-extras version of OpenTTD 0.6.2, and got some results with the Segmentation fault I keep on getting.
I ran the game with ./openttd -d 4 and noticed that the Segfault happens in middle of openttdw.grf loading, so I deleted the file and tried to rerun the game.
result was this:
No segmentation fault, but missing graphics. But hey, atleast it's progress
On the other hand, the same package works on my friends N810. We have no idea what's going on with this