It's a bug with the system used to cache userpics. Developers are on it, but it's proving elusive so far. If you had an userpic replaced, go open a Support request with the exact URL of the replaced userpic - someone will flag it appropriately and developers will give the server a kick to force it to show you the proper userpic.
no subject
Date: 2008-11-19 05:35 am (UTC)