Why doesn't my iPhone 4S lock screen not have the slide up and use camera icon?

The OS is 5.0.1 (duh) and I haven't jailbroken my iPhone. Is something wrong? Because I haven't had the camera icon on my lock screen since the day I bought my phone…
I still have to double tap the home button like on ios5… Please help?

Added (1). I'm sorry for the extra "not" in the question…

The problem is that you are on iOS version 5.0.1.

The "slide up for camera" feature was new in version 5.1. Update your iPhone.