I have installed the BBC iPlayer, but every time I activate it, a program called Kontiki pops up. Denis
When you download TV programmes using iPlayer -- as distinct from watching streamed versions online -- they are downloaded using Kontiki. This is a peer-to-peer file sharing program, which is also used by similar services such as Sky by Broadband and Channel 4's 4oD.
The problem is that Kontiki seems to load and use your bandwidth, even if you are not using iPlayer: use the Windows Task Manager to see if Kservice is running.
The BBC has a help page that explains how to stop it running on startup and when you are not using iPlayer. You can remove it altogether using the kclean.exe program from OMN. However, if you do, any Kontiki-based programs such as iPlayer will stop working.