Yes, I have run out of space. I live in an efficiency apartment so it's just a kitchen, living/bedroom, and a bathroom. Both the living/bedroom and kitchen are fairly large kitchen is 14x12 and the other is 16x17 but right now i have them crowded.
With the murphy bed down the living room is cut to about 9x10 and in that space I have a computer desk, tv stand with 32" tube tv, speakers x2 (obviously) my Sansui speakers that don't work, a record bin, stereo rack, a high back chair, three end tables, and a record player console that needs rebuilt. Basically their is a path from the little hallway that snakes around to the stereo and to the couch and computer. With the bed up I still have tons of space to expand.
In my kitchen I have a eating table, my working table for rebuilding race stuff for my friends (mostly carbs) and record bin, that needs a new, base laying on it's side. the obvious stove and refridge, another record player console that needs rebuilt, and all my tools. More open space than my living room but still really cramped.