g data out an outlet or modifying members of a linked list. This lockout mechanism has been deprecated, and under the Mac OS X and Windows XP versions (Max 4.2 and later) does nothing. So how do you protect thread sensitive operations? Use critical regions (also known as critical sections). However, it is very important to mention that all outlet calls are now thread safe and should never be contained inside a critical region. Otherwise, this could result in serious timing problems. For other tasks which ar