User blog comment:Era of Anarchy/Modern Warfare 2 update for Xbox Live/@comment-1705091-20100205011744

- Care Package, Emergency Airdrop, and Sentry Gun marker grenades sprint speed normalized. - Fix for "infinite care package" exploit. - Sentry Guns: Improved placement detection, preventing cases of Sentry Guns inside geometry. - Model 1887: Bling using Akimbo and FMJ combination now has same range and damage as non-Bling Model 1887s. - Improved player collision removing cases of getting into geometry and 'elevators'. - Fixes to prevent various XP hacks.

If you're talking about Patch 1.08