Updates to Left 4 Dead 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

- Added protection against possible memory corruption from oddly sized avatar images
- Added handlers for two crash types that weren't getting picked up by our crash reporting system
- Added dlc directories to whitelist for consistency checking
- Flagged whitelist.cfg, motd.txt and host.txt to not clobber local versions on updates
- Updated some translations

More...