[quanah]

Originally Posted by ilsa

There's no point complaining to Zimbra about it. Rather than making an effort to help customers deal with the problem, they'd rather just blame someone else or suggest other untenable solutions like "use a 64-bit hypervisor". (If I was able to use a 64-bit HV from the start, don't you think I'd be doing so already?)

I spent a lot of time researching the issue you reported in Bug 39498 – Xen: 4gb seg fixup, process slapd immediately after install. It is a well known problem with the issue of Xen you choose to use. Since you won't use the stable known good version of Xen, there's not much further that can be done to help you.