Lightroom 2.3 and Camera Raw 5.3 update : Nikon D3x and Olympus E-30

In addition to these new supported cameras, the updates fixe the following issues : 

• In the Windows 64-bit version of Lightroom an sFTP upload process could cause Lightroom to crash
• Slideshows could return to the first image randomly during playback
• A memory leak could cause Lightroom to crash while attempting to process files with local adjustments
• Canon EOS 5D Mk II sRAW files could process with artifacts in Lightroom 2.2
• Lightroom 2.2 could cause disc burning to fail for Windows customers