在CodeBlocks中编辑时，行尾的^ M（我认为）

I'm on Ubuntu Linux 10.04. I use vim for most of my development and CodeBlocks for debugging. When I first moved from Windows to Linux, I noticed that vim was showing ^Ms for newlines, and found out that this was a Microsoft thing. However, even after removing them I notice that they sometimes reappear in files (files that I edit in CodeBlocks I think?). I'm on Ubuntu Linux 10.04. I use vim for most o