Oh Yeah! My XR8 did this on the 2nd day and stalled on the 4th day. I know a guy with a GT who had similar problems within the first week, but the problems seemed to disappear. Have also heard of a couple of XR6's with stalling problems for which the treatment was new throttle bodies.
'03 BA XR8 Manual, Edit, Hi Flow Cats, HPX twin system, King Springs, Battens C.A.I.