Theres a major patch being released on Monday to fix and address several issues as well as tweak certain gameplay elements
Trophy/Medal/Ribbons
Salute Me trophy is not awarded until player reaches level 31 (Lieutenant)
Berserker trophy can be collected during non-ranked games
Survivor medal can be collected in cooperative games
Sure Shot ribbon is awarded if player has accuracy of exactly 50%
Clans
Added clan support for viewing members, sending invites, and setting up clan tags
Default clan region is now USA
Match Balancing
Unbalanced ranked games are cancelled in staging before the game is started
Parties are prevented from matchmaking into free-for-all Deathmatch games
Competitive
Loadouts can be disabled in the Create Game screen in competitive games
Balanced the chance of dropping large ammo pickups in competitive games
Core Control scoreboard displays Kills
Improved scoreboard formatting
Cooperative
Balanced the amount of XP gained by the Medic class in cooperative games
Stalker movement enabled in cooperative games
Small ammo pickups dont give LAARK ammo in cooperative games
Weapons/Gameplay
Splash damage on Pulse Cannon can damage the player firing it
Rossmore reticule better reflects its accuracy
Fire is easier to shake off
Players cannot swap weapons in the middle of a melee attack
Miscellaneous
Localized text updates
Network message optimizations
EULA displays the correct language text for Norwegian, Finnish, Swedish and Danish
http://blog.us.playstation.com/2009/01/23/resistance-2-patch-140-details/