Well depends, the picture or the gear? I think the picture is only updated like once or twice a day and the rest is more frequently. Also, need to be logged out or something. I dont think its based on how long you been logged out either, but updated at certain times each day. (Ie on the hour but not sure if that's the time). I've seen where sometimes gear has been updated within few minutes after log in and other times like an hour or two. And then pictures like said earlier I think is only a couple or few times a day.