I read about a string/word that did so the Routing crashed but I can't remember which word/string combination it was.
Example:
http://stackoverflow.com/questions/685039/microsoft-logging-application-block-and-multi-threading - works
http://stackoverflow.com/questions/685039/hello - works
http://stackoverflow.com/questions/685039/random-random-hello - works
No it's not banana, but it was a word/string that did so the the routing crashed in every app that used the routing system.
I think I remember this was a known issue but I can't remember where I can find it. Maybe I've read about it on stackoverflow in a comment.