I'm presently touring in Europe using courses that I worked out beforehand with RWGPS. I very definitely have recalculation set to off in the profile (I've checked a couple of times), but I've noticed repeatedly when straying off course that the 1030 recalculates (says it's recalculating and then puts the recalculated course on the map).
The 1030 is running FW 6.00 and I performed a reset on it after the FW upgrade.