I'm thinking maybe that is the problem - you registered an account there before we have the code in place to link it to your iHub account. So, it is seeing you as someone different when accessing via iHub.
We're going to have to go through an even more complicated maze when SI gets all of the ADVFN content. Users of portfolios and watchlists and other customized features will most likely want it associated with both their iHub and SI account.
I'm sure it will all get sorted out... eventually.