Keep the home launcher from being killed
I think ADW Launcher has a setting that should keep the application in memory. Also, CM has a setting to force the OS to keep the launcher in memory. I dont remember where it is at in CM6, but in CM7 it is in Settings -> CyanogenMod Settings -> Performance and it is called "Lock Home in Memory". I don't remember if it was in the same place or if it was called the same in CM6.