Getting "file already exists" error for file that couldn't exist?

I'm using the Subversive plugin in Eclipse, but I think I need to
understand the scope of the problem I'm getting just within Subversion.

I created a file in my Eclipse workspace that I'm certain didn't exist
before. I did a "svn add" through the plugin. I committed it. I got
the following error:

svn: File already exists: filesystem '/cm/websvn/db', transaction
'128517-1', path '<path to the file I created>'

I then aborted the commit, reverted the add, deleted the file, did a
"svn update", created the file again, added it, and committed it, and I
got the same error.

What could be happening here?
Received on 2010-03-05 18:49:12 CET