Apparently, the PS3 version of Rainbow Six Vegas 2 is having some major issues with the multiplayer component of the game.
Reportedly, there are problems with lag and even being able to connect to games. Ubisoft hasn't patched the game yet as they were on vacation for Easter.
Have you experienced any problems with Vegas 2 on the PS3? On the 360? Either way, check out this video of the Total Conquest game mode in Vegas 2.