My SL MacBook Only Secure Empty Trashes

Since I got SL and had a small trashcan, opened it up, and instead of emptying it via dock and just hit the "secure" button in the window out of laziness, every time I empty the trash, it does it securely, which takes a lot of time. I have a very large trash load and don't particularly feel like devoting the full CPU to writing over files I simply don't need anymore (mostly old downloads). Is this a feature? How do I disable it?

 

Thanks, man