rm: Test: Directory not empty

Hi,

I typed rm -d -i Test-->y-->rm: Test: Directory not empty, but in fact there is nothing in the folder of Test.

The-Universe:Test LS$ rm -i testfile
remove testfile? y
The-Universe:Test LS$ ls
The-Universe:Test LS$ cd ..
The-Universe:~ LS$ ls
Desktop Downloads Movies Pictures Send Registration Test
Documents Library Music Public Sites dwhelper
The-Universe:~ LS$ rm -d -i Test
remove Test? y
rm: Test: Directory not empty

Why is this so?

Thank you!

Cheers.