Updates to Day of Defeat: Source have been released. The updates will be applied automatically when your Steam client is restarted. There is a rather large list of updates that can be found on Steam News. Several updates fix or change settings of weapons including making the Allied Garand and 30cal more accurate.

News Source: Steam News

For those of you running with a 64-bit capable AMD processor, along with the Windows 64-bit operating system, Half-Life 2 and Lost Coast are now available in native 64-bit versions. Steam will automatically detect your OS and run the appropriate version the next time you run these games.

We've been working with AMD to get the Source engine up and running in 64-bit mode to make sure we're taking advantage of these hardware configurations. This is just a first step for Valve into 64-bit. Going forward, we realize that more and more of our customers will be running with 64-bit processors and we will be set to take true advantage of them.

Read the full story on Steam News.