Internal Server Error when trying to remove some directories

I'm doing some tests with the API and I'm getting errors (error code 1001) when deleting some of the directories I create.

As a test, I tried creating 100 directories, and then deleting every one of them, using the DeleteObject operation.

Out of the 100 directories, 89 were okay, but 11 failed to be deleted. No matter how many times I try, these directories are not removed.

I'm sure they are empty, as I just created them, and I created all of them in the exact same way.

Any ideas on what's happening, and if I'm doing something wrong?

I'm including a dump of one of the failed DELETE HTTP requests.

Thanks,

Luis

---------------------------

DELETE /rest/namespace/ipepirel/dirtest94/ HTTP/1.1
Host: accesspoint.emccis.com
Accept: */*
x-emc-uid:b80fee45ede44745ba15523a7245cfb7/ELDOR5163661382775FE
Date:Fri, 19 Jun 2009 13:48:42 GMT
x-emc-signature:nzKiyp9caNfl1K7w82td96l5Lek=

HTTP/1.1 500 Internal Server Error
Date: Fri, 19 Jun 2009 13:49:03 GMT
Server: Apache
Content-Length: 155
X-Cnection: close
Content-Type: text/xml

        1001
        The server encountered an internal error. Please try again.