Just found this on Gamespot... Didnt check it yet but here ya go.
Slappy
Infinite Experience
Once you get into Bowerstone Market walk to Town Square. Once there you will find a potion shopkeeper on the left hand side. Walk around the right side of the buildings there and down an alley to find a house known as Monster Manor. Sleep in this manor to gain its benefit (+1 star of Physique) Once you gain this benefit, go to your abilities list, select physique and hit Y to unlearn it. You will find that the bonus star from the house does not disappear, but the experience is given to you anyway. You can repeat this process over and over, the more stars you have in physique the more exp you get each time. This experience is general experience and can be applied to any skills.
Ya on this glitch you have to remove the patch and make sure u play off xbox live once u remove the patch you can get all the xp you want and max out everything
THANKS that was a great exp tip...
IF IT DOES NOT WORK FOR YOU, REMOVE THE XBOX LIVE PATCH.
Here is a tutorial how to do it. I had this problem , it worked for me
www.youtube.com/watch?v=NSp_c0yDAG4
thats removes downloaded content for ALL games <_<