Just as the title says, whenever I open other apps, the "Settings" app always open up. I use the advanced task killer and i notice that the "settings" app is always on regardless of what app i use.

In fact, I just checked that right after i exit it and when i go back, it automatically comes back on. Is the settings app suppose to be on spontaneously?

also i sometimes see that the MP3 Store app is on although I NEVER use it. is the app linked to another app (maybe market for some reason?)?

Nexus 1 is my very first android phone and that I'm thinking there might be few basics i'm not completely aware of

any help/info would be great thanks!