Flickr causes crashes with Aperture
There's is a cooler solution if you are a bit into computers.
You can create an automator script and link it with Aperture. When the connection with flickr is opened, the script will disable sleep on while uploads are pending. Or similar. Google for "pmset", "sleep", "mac", "automator", "script" etc.
|Dirt Hose by poppyjk|
|European bee-eaters by drvanger|
from A Big Year - birds
|Fat Is Beautiful Guinea 2008 DP by MarioSS|
from - Fat is Beautiful - (Woman's Portrait n Black and White+ A Border)