Hi, Photog. Have you updated your firmware, yourself?
I have 'good hands' myself, (at least when feeling healthy) from sticking with the old school so long, ...if the SR system, or any SR type system, does not have any shake to detect, like on a tripod, it can actually end up inducing some as the sensor looks for the right correction. I had this issue a *lot* before I updated the firmware on my K20d, now, I actually forget to turn the SR off a lot and don't suffer for it.
SR still does require a little moment to lock on, at times, but if it is switched on, it is active, with the exception of when you use the self-timer. Then, the camera presumes the camera isn't moving and defeats the SR for you.
It sounds like under the conditions you were shooting with that Tammie, though, you may simply have been pushing things too much. SR isn't infallible, anyway, either of wide-open zoom sharpness, or as I presume, recognizing shake effects when you see em.