The problem may occur due to Caching at the server level.
In Chrome Browser:
I would suggest to test whether your Image has been successfully updated or not. You can do it by right clicking on the Profile Image.
It will give you the option: Open Image in New Tab. In case its showing the old image
http://www.india-forums.com/images/avatar/m_1076601.JPG
Please try by adding random number prefixed by ? like:
http://www.india-forums.com/images/avatar/m_1076601.JPG?2232
Please let us know the result here.