2 Question on Remote Control & Master Lock

[Altin]

Recently installed XBian on my Raspi & with a Windows MCE remote control it is fantastic! Ive found though that the Fast Forward & Rewind buttons on the remote control (http://www.amazon.co.uk/gp/product/B003ZV3J72/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1) do not work when watching movies. Is there anything I can do to fix this or is it something to do with the remote control itself?

Also I was hoping to set up a User profile in XBian & only use the Master profile when changing settings, etc. It appears though that you must boot into one profile or the other (the Win XP user account model), whereas I as hoping that I could use the User profile & then 'sudo' the Master profile when I wanted to change settings, etc. Is this the way accounts/profiles are handled in XBian?