Use Cmd+Ctrl+'F' to exit full screen mode in Lion

(But for chrome, because it has it own Full Screen mode implementation, use

Cmd+Shift+'F' to get in and out of full screen mode.

iTune 10.4 (80) has a new look.

Grand Central Dispatch is in some sense a mail-box (message queue) type messaging system. And as erlang has proved that you can use message queue to achieve synchronisation, you can use GCD to effectively setup critical section.

http://ep2011.europython.eu/p3/schedule/ep2011/list/

http://news.cnet.com/2100-1041_3-5154202.html

It is an old news (2004) but I only heard of it today.