that sux, really sorry 2 hear
yeh the exact same thing happened 2 me a few months ago only i woke up while they were still in the house! luckily the keys they grabbed were for the wrong car (mine are always by my side) so they ended up with the keys for my parents camry which wasnt there at the time and thought they got the keys for my skyline!
anyway i really hope you find who did it as we never found out who broke into our house and it was really frustrating knowing that sum1 can do this stuff and get away with it