Ubisoft has announced it is working on a patch for Rainbow Six Vegas onn the XBox 360. The patch includes a fix for the apparently buggy voice chat among other things.

Many of these issues were reported by members of the community, thanks to everyone that took the time to communicate with us. Please understand that this first patch was being worked on a few weeks ago already and that some of the recently discovered issues may not be addressed right away. We do know about these critical issues and are planning to address them as well.

Teamxbox has a full list of the bugs fixed in the patch.