I’ve been playing Half-Life 2 and Counter-Strike: Source quite a bit this weekend, and noticed a few quirky things such as some textures on walls being a solid red, etc. When opening up the console to enter commands, there would be various errors such as mp3’s and graphics files unable to be found.

Yesterday Valve released a slight update to Steam which will allow you to check your game cache to make sure it’s valid. I just did this for the above 2 games, so hopefully it fixed-up those little problems.