Cursor no longer snapping to selection.

I am using Blender 2.49

Ok, before yesterday the cursor would automatically snap to whatever I select. Now, every time I select something (e.g. a group of vertices), the cursor does not snap to the selection. I believe I pressed some key that altered the automatic snapping. I know you can press SHIFT-S to do it manually, but doing that is extremely annoying and time-consuming since this particular model I am working on has a lot of vertices. I would like the cursor to go back to automatically snapping to my selection - any help with this problem is greatly appreciated.

Do you mean the 3d curser or the transform manipulator. If you actually mean the manipulator, try pressing the comma key on your keyboard

Thanks! Pressing the comma key fixed the issue.