Boot Camp (Bootcamp.exe) regularly seems to unload itself with Windows 7 64-bit Home Edition. I usually find out when I try to use fn + Volume keys (f11, f12) and it doesn't work. Then I see the Boot Camp losange in the tray area, and when I mouse over it disappears.
As a workaround I have it now pinned to the task bar so I can use the handy Win + number shortcut to reload it quickly, but I'm still puzzled as to why it disappears like that.
Could this have to do with permissions?