I deleted all my files from Docs but it still shows I am using 2.05GB of space

I deleted all my files from Docs but it still shows I am using 2.05GB of space

I was having trouble uploading more files because of the 1GB/user limit.  To troubleshoot, I deleted all of my files including cleaning up the trash.  However, when I go to Storage Details it's still showing I used 2.05GB of space.  What could be the problem?