For such general inquires regarding technical problems on the portal, we normally use the Suggestions / Comments forum. Next time round when anyone has a generic administrative issue, please post it in the above mentioned forum.
There are various topics going on regarding the profile picture not being updated:
Temporary solutions have been suggested in the aforementioned threads such as changing your display picture from Google Chrome if you are currently using another browser (such as Safari, Torch, Mozilla Firefox etc - which are incompatible). Check out the threads, there may be something useful.
I am therefore moving this topic to the S&C forum.