I'm quite surprised at this.
I wasn't expecting it to take a whole week, seriously.
What will be interesting to see will be the general uptake of it and whether it persuades IW (or Activision's money men) to re-intriduce true server support for the PC version. Otherwise we're going to have a two tier MW2 where clanners and hobbyists play one game (and presumably get banned from IW net for modding) whilst everyone else plays the matchmaking and suffers.
Some would probably prefer that segregation of the hardcore from the fun players, but not me, it just blocks people from getting the most out of their game. Which would be a real shame. Especially when so many players get sucked into gaming through their encounters with clan teams (the nice ones).
As an aside
Three cheers for the return of lean!
I love pc gaming.