Can you name some specific instances? I can't. Just to be sure I watched the last two UFCs (57 & 58) I had recorded on my Tivo. Fighters are typically separated after 30-45 of almost complete inactivity when up against the cage and are rarely brought back up from the ground without at least a full minute going by. That's 20% of the entire round. Fights where at least one fighter is actively attempting to strike, submit, or improve his position are kept on the ground.
Examples of the bad calls in recent UFC matches are things like fighters who are being agressive in the clinch up against the fence but are getting seperated and put back in the centre of the ring.
Ground games are being stood up after only a couple of seconds. What this allows is for guys who are good kickboxers to win fights by just learning how to stall on the ground and get the stand up.