Portal 2 Update 5 info:


-	Fixed install failing on FAT32 drives.
-	Fixed problems when Steam is installed at the root of a drive.
-	Fixed console font being unreadable on Mac.
-	Fixed VPK caching.
-	Fixed some Russian audio playing as static
-	Fixed Turkish fonts


Portal 2 Update 4 info:


-	Fixed rare crash when painting hard light bridges while moving them
-	Localization fixes for Chinese, Czech, Dutch, Finnish, French, Hungarian, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Thai, and Turkish
-	Improved VPK loading speed