I have had the same profile picture network-wide since 2008.
Until recently, the same profile picture was used for all SE sites including bricks.SE. Today when I visited bricks.SE, I noticed that my custom profile picture has been replaced with a generic one.
My profile picture appears correctly in all the other SE sites I've visited today. Did someone break something here, or has my profile picture been deemed unsuitable--for this site only--because it depicts a LEGO™ minifig?