Index: /CKEditor/branches/prototype/_source/plugins/sourcearea/plugin.js
===================================================================
--- /CKEditor/branches/prototype/_source/plugins/sourcearea/plugin.js	(revision 2979)
+++ /CKEditor/branches/prototype/_source/plugins/sourcearea/plugin.js	(revision 2980)
@@ -45,4 +45,8 @@
 							}
 
+							// By some yet unknown reason, we must stop the
+							// mousedown propagation for the textarea,
+							// otherwise it's not possible to place the caret
+							// inside of it (non IE).
 							if ( !CKEDITOR.env.ie )
 							{