Build 8 was just released on Steam. If you don't see the update, restart Steam and it should be visible. This fixes a number of small issues:
* Improved mouse control when VSync disabled.
* Show CM variant (Countdown/Infinite) on briefing (next to difficulty level).
* Removed ability to play Challenge Mode on Insane from Leaderboards screen if Insane still locked.
* Increased timeout time on leaderboard.
* Reduced size of large text on leaderboards.
* After playing Challenge Mode, leaderboard now shows Countdown/Infinite based on what you just played.
* Fixed weapon select keys affecting powerup outlines.