From Bioware Site:

This morning a patch for Mass Effect 2 went live on the Xbox 360. This patch contains the following:

-Scanning for minerals has been optimized!
-Fixed an issue with marking all entries as viewed in the Journal
-Fixed an issue relating to text and the menu screen
-Fixed an issue relating to players starting a new game and loading a save
-Fixed multiple issues when loading a save containing DLC when DLC isn't present
-Fixed an issue with ammo flashing when it can't be picked up-
Fixed an issue with crosshairs
-Fixed an issue with Grunt's Fortification power
-Fixed an issue with enemies and cover
-Fixed an issue where players could receive additional talent points
-Fixed an issue where squad members would overwrite ammo powers the player had assigned them

Source Link: HERE