I recently split the fourth episode of my comic in two. Reason? It was big.
Well... my episodes are already big but this was big even by my standards. I was probably like 90% of the way done with Episode four of my comic and decided it would be best if I split it. Even at that point it was twice as long as the longest episode so far and I... do like them to be an easy read if I can manage that.
... I dunno know if this is a problem other folks have had so I'm asking out of curiosity. Hey, leave a link to your comic while your at it!