I don't see the need or point in re-starting up a 2year old thread again, either.
But any way it is a "open topic",....
As far as the questions go:
Do we want/need to mark our threads as solved?
Who is we ?,... I want to, and do take the time to edit the first post of the
topic I start, and add the word "solved" to it,...but it is not mandatory ir required,
If you don't want to, you don't have to. Quite often somone will ask you to
or suggest doing that, if you don't but it is not manadtory.
Do the administrators of the forum want/expect us to mark our threads as solved?
There are several "administrators", and I am not one, but just do a little with the spam,
so I can't really speak for them,..but as part of the "team" so to speak, and also as a forum member, I can say Yes, we want you do that, it is appreciated, however especially for new members, it is not really expected,...so that is why we usually suggest it, when it is a new member,...but it is not manadtory.
I see you are not a new member:
Which really makes me wonder what the motives are in stirring up a old thread like this,... I think, since this is solved, and has many answers in it, this would be a good point and time for a moderator to close the thread, there really is nothing more to say on it.