I've observed this issue for a long time now, since I've been using a (at that time) very current Gentoo ~x86 install, now on Arch Linux and also on the Ubuntu 8.10 Beta. Voice just does not start at all. Other audio is working perfectly (either with ESD or Pulse). I know that voice is working for a friend of mine who still uses Ubuntu 7.10, so I'm really wondering if this is a general issue with more current Linux distributions and if other Linux users are affected as well. When trying to open the Device Settings in the Voice Chat panel, the following is thrown on the debug console or terminal: 2008-10-04T15:52:00Z INFO: LLVivoxProtocolParser::process_impl: returning STATUS_STOP terminate called after throwing an instance of 'std::out_of_range' what(): basic_string::substr The Vivox daemon just seems to crash reproducibly for me on the mentioned distributions.