To my best knowledge third party apps should not launch automatically. What apps are launching? Some apps may launch if you have it set but not without you setting it.
Posted from my CrackBerry at wapforums.crackberry.com
Some third party apps start up automatically while others no. So it really depends on the app. because a lot of the apps that you have that use system resources like autostandby or the whitebook app or whatever its called, those start up right away. MemoryEye (another app that I use) starts up automatically. There might be an option in the settings for it to autostart up? Sorry