I just wanted to create a new account on a 6.04 zimbra server. I did not succeed since no information has been asked for posix and samba id (I updated the LDAP schema some months ago, on a 6.01 release).
In the mailbox.log file I got the following error:
SoapEngine - handler exception com.zimbra.common.service.ServiceException: invalid request: createAccount invalid schema change: [LDAP: error code 65 - object class 'posixAccount' requires attribute 'uidNumber'] which confirms the reason of the error
When editing existing account, I have a similar pb: tabs for posix/samba ids are not displayed any more.
Of course I checked that the corresponding admin extension are still installed (and even uninstall and re-installed again).
I also noticed a difference between tabs available when editing an account, depending if I am using MSIE 7 or firefox 3.5.7. In the former case I have 11 tabs (the last one is "advanced") and in the latter I have 3 other tabs : "zimbra mobile", "ACL list", "Admin view"
In no case I have posix and samba tabs
6.04 was installed the 24th of Decembre 2009, and a new user was added since early January 2010. The only known difference form now (22 Jan 2010) is a reboot of the ubuntu server since then.
Not sure all these pb are related, but this currently prevents me from adding new account.