I'm having an issue with a new iMac and Lion. With CS 11.5.3 and an Aptus 65 back (tethered) I can take a shot, watch the "Transferring new image" progress bar in the lower left of the screen, but then nothing. The image does not update with the most recent capture. It's pretty intermittent, but I would say it does not update about 80-90% of the time. If I fire up Capture One, it is better, but still does not update new exposures. Is this a Lion issue? So far, I'm not that impressed with Lion.