Unable to delete files from briefcase

[bhwong]

One of our users is unable to delete any of his files from his briefcase. Is this another known bug or should I submit one? The error message is as followed:

An object with that name already exists.
method: ItemActionRequest
msg: object with that name already exists: 4673_001.pdf
code: mail.ALREADY_EXISTS
detail: soap:Sender
trace: btpool0-35057://mail.domain.com/service/soap/ItemActionRequest:1299552621115:11252f57aa42e822
request:

Body: {
ItemActionRequest: {
_jsns: "urn:zimbraMail",
action: {
id: "1032",
l: "3",
op: "move"
}
}
},
Header: {
context: {
_jsns: "urn:zimbra",
account: {
_content: "user@domain.com",
by: "name"
},
authToken: "(removed)",
session: {
_content: 162374,
id: 162374
},
userAgent: {
name: "ZimbraWebClient - FF3.0 (Win)",
version: "6.0.6_GA_2324.UBUNTU8_64"
}
}
}

[bhwong]

The resolution to resolve this, is to create a new folder and move the files to be deleted into this folder and delete this folder instead.