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.