Unable to create or edit Mailacount in Plesk Panel

[SpcnetD]

Hello:

We are having problems with one of our Plesk control panels, version 11.0.9 with MailEnable Enterprise 6.60

When trying to create a new mailbox or when trying to edit an existing one, the panel is charging, without actually displaying the menu creation or editing mailbox. After restarting the server it works again for a while, but the next day the same thing happens again.

We tried to restart Plesk services, MailEnable, IIS and SQL, but only works again after reboot.

Thank you very much