The Secret World lately, you've probably run across a fairly annoying chat bug. Sometimes the game's group, guild, and local channels simply don't work, which makes it hard to coordinate if you're not using an external voice program.
Funcom is working on a solution according to a post that showed up on the game's forums late last night. In a nutshell, the game's single-server tech necessitates a distributed load across multiple pieces of chat-focused hardware, and some of the boxes "stop talking to the other servers for periods of time." Funcom says that this issue was impossible to detect until hordes of players started stressing the systems, and even now it's difficult to reproduce and debug.
That said, the company is currently working on "several fixes and some backup plans."