We have a couple of users reporting that their tags on mail items are randomly disappearing. The users share one account sync'd to Outlook 2007 on two computers. One user is an assistant to the other and the assistant marks messages as "categories" in Outlook which get pushed to Zimbra as tags then back down to Outlook on the other machine. At seemingly random times, all of their tags disappear from both the server and Outlook sides. I've looked around and can't find any bugs related to this. Has anyone else been seeing this behavior?