This exploit/bug is only working when you have some extra IP and too low base ability to raise a certain skill. If you open your skillwindow and try to raise a skill, but get a message that says your baseability is too low you can only raise the ability temporary. Then put your IP points into the skill that need higher ability, after that you can remove the IP points for the ability you raised.
Not a big issue, but it's a bug after all... will I get banned for doing this for 2 levels?? I hate raising sense to be able to raise physinit... don't ban me please, I'm posting this after all... hehe... bored...