So, I wanted to change my current avatar picture and place another. As usual, I headed to 'My Accout' tab and chose an avatar like anyone is supposed to. After that, I scrolled down and clicked 'Save Preferences'. But....my picture did not change. I tried sevral times refreshing, re-logging, but it just won't work! It's not good, you know. After all, how long would you want your unwanted pic to be you avatar?? Does anyone have an idea how to fix this?

Please clear your browser cache after uploading avatar. In most of the browsers this can be done with hard refresh (Ctrl + F5).

Yup, it worked. Thanks, Angel! :)