When you say you "updated" your profile, what did you change?
In order to update/change your avatar and/or your profile picture, you first must go to User CP and click on the area in which you want your changes.
Your profile picture comes under "Your Profile" options, while things like changing your avatar, signature and several other categories are listed under "Settings & Options."
Once you made your alterations, are you certain you told the system you wanted to keep/save your changes?
You might want to go through the process again to be double-certain you completed each process to its end.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!