Fixes in v1.7 include:-
- Fixed an exploit that allowed players to access certain console dvars during multi-player matches.
- Fixed a crash that could occur when a Chinatown Sabotage match would go into over-time.
- Fixed a bug where the MP icons (Bomb, Defend, Capture, etc) were always showing up as English regardless of the install language.

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Don't forget you need the Call of Duty 4 1.6 patch first