I discovered a problem with the new ZCO.
After the upgrade to 4.5.7 I let my users upgrade their ZCO.
For most of these useres a new profile was created and they were asked to give the server name and so on.
I discovered that for these users the ZCO was installed before they started Outlook for the first time, resulting in a profile named Outlook that was used to sync with Zimbra.
Now the ZCO created a new profile called Zimbra.
Has anyone else seen this?
I would consider this a bug and opened one in bugzilla: Bug 20690 - ZCO creates new profile when upgrading