I am sure you will see improvements to these areas in Lightroom, as I see it LR 3 was a new rebuild, new process engine, new noise reduction/ sharpening and introduction of Lens correction profiles. The rush to meet the introduction of PS CS5 seams to have left them short on the testing of the upgrade and they are now struggling to deal with the performance bugs introduced with LR 3.x. JMHO. Raw conversion software is still in a rapid stage of development and other software providers keep pushing the envelop, Capture 1, DxO, Bibble, Aperture and others.
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