I was working with some 30 second shots and when I viewed them on my camera's LCD screen I could see a couple of hot pixels, then when I opened it up in Lightroom they were still there as expected.
But when I opened the unedited raw in CS4 the hot pixels are gone, it did a good job so I'm not really complaining. 
Does it do it automatically? what else does it do without me telling it to?

