It's nice to see a contrib of eAccelerator--I've been using it for quite a while under 6.0 and prior, but had never gotten around to packaging it up. I installed this and it seems to work pretty well (and definitely speeds up Horde 3, which is much more resource-hungry than prior versions). Having a server-manager panel to control it is a nice feature as well.
Here are a few things I noticed as I was checking it out:
* It looks like your RPM puts template fragments into templates-custom. This is discouraged, as conficts with other fragments won't be apparent. templates-custom is intended for local customization only; anything belonging to a contrib belongs in templates (or templates-user, if appropriate) instead.
* The server-manager panel allows the admin to enable/disable eAccelerator for any Ibay. I wonder if there's really a need for this feature--I don't see one, but I'm probably missing something.
* OTOH, it would be nice to be able to control some of the eAccelerator parameters in the panel--how much memory/disk space to use, for example. Perhaps the panel could link to the eaccelerator.php page to give some statistics on the accelerator.