How about "BigFoot"?
Probably not the best for a server application. Might make one think of the "footprint" involved ... and isn't one of the major reasons to moving to mod_perl to reduce the overhead and "footprint" of the server?
Now Yetti no conotation there. Or Swamp Beast, Sasquatch, or possibly even the local favorite Nessie (I'd love to see Ora get a picture of her on the next book!)
-Chris