You can clone with
Sorry. You can set CometActor.lifespan = Full(1 minute) and the CometActor will be destroyed 1 minute after it's not on a page anymore. This is the best resolution I can get to.
Imported from GitHub: http://github.com/dpp/liftweb/issues/71/find
Imported from Assembla: http://www.assembla.com/spaces/liftweb/tickets/71