If you have read the LockLayer autodoc, you'll see:

	Further Note: while you hold the lock on a layer, Intuition will block
	    on operations such as windowsizing, dragging, menus, and depth
	    arranging windows in this layer's screen.  It is recommended that
	    YOU do not make Intuition function calls while the layer is locked.

What does this mean when we think about it? Synchronous
interaction with Intuition while layers are locked may be
deadly. This means that you may not call Intuition or wait on
messages from Intuition.

Think about this hard when writing gadgets or datatypes!

Heinz Wrobel
<heinz@amiga.de
