In version 18.0.178 MC sits there, not doing anything and eating up between 30 and 40% of my CPU, together with kernel_task.
After starting MC, the fan of my MacBook (core2duo) spins high and gets disturbing.
It looks as if MC is working in the background, but auto import is off.
Didn't notice that before.
The GUI is beginning to get unresponsive.
Every now an then, instead of taking my keystrokes, MC is thinking, if it should do what i want.
It is showing the beachball then for one or two seconds before actually doing the task (skipping the track or increasing the volume, for example).
OS is 10.7.5.
There are about 50,000 records in the library.