Decisions, decisions.
I worked at a MAJOR telecommunications company for about five years, during which time we went from high walls to low walls, then back to high walls and then, to low walls again.
When the walls were high, management convinced themselves that we weren't working. When the walls were low, they decided we were too sociable.
And, at $750 per cube per change that adds up to quite a bit of money. (I was told it cost $750 when I asked to re-arrange my cube for physical health reasons.)