Hello,
I am using LR3.4RC, OSX 10.6.7, 8 GB RAM, 2.93 GHz i7.
I am having a similar issue. When I put the cursor over a slider to make it active, use the up and down arrows to adjust, the adjustment is made as expected. Then, a few moments later, 10 to 15 seconds, the adjustment reverts to the previous setting all by itself. This happens, at least, with the white balance, exposure, brightness sliders, and many of the brush sliders.
I can sometimes get this to stop by immediately moving the cursor off the slider, but even this doesn't seem reliable. I am processing ARW files from a Sony A-850, though I think this also happens with scanned images. This is, of course, a frustration!
Any thoughts?
Thanks!
Michael