Steam News announces a new patch is now automatically available for Killing Floor, Tripwire Interactive's co-op zombie shooter (which happens to be on sale for 50% off). The change list follows.

• Fixed clients hanging during map change
• Fixed an exploit found in the Perks system
• Fixed a glitch and memory leak in the Audio system
• Fixed downloaded files in the Cache folder causing Perks to disable

Mac Specific

• Audio effects should be more correct (footsteps should be audible, player's own gunshots should be louder, etc).
• Fixed MP7 Shoot sound not working properly
• Dedicated server should work now.
• Motion blur, windowed mode, and crossbow scope should work on all ATI GPUs, now.
• No longer forces crossbow scope to "Textured" mode at startup.
• Other minor fixes.