» Thu Jun 28, 2012 10:30 pm
1. What browser are you using?
2. Where are you trying to upload from?
3. Are you using any script or ad blocker?
Assuming you're just in the wrong place, go to your profile page (click on your name in one of your posts), hover over your avatar (yours is currently just the generic silhouette dude), click on the button "change" that appears, upload or link to your desired avatar (there's no upload button, it's automatic), and click the "done" button. If it doesn't upload automatically, you may be trying to use too big of a picture or blocking a necessary script.