Green mobs xp problem...
 

I am not sure about this one. As far as i remember, we always used to get xp when killing green mobs. However, I am not getting any xp from the orc pawns (green to me) i am killing. Wasn't it like only grey mobs did not give any xp?

No.

That change was added in 2008. It's not even in our client >_>

Some greens do give xp, but it's a tiny amount and it's only higher level green stuff - not lvl 1 orc pawns.