Does anyone know what would cause /opt/zimbra/index to shoot up in size (by as much as 1.5-2GB) in as little as 30-60 minutes? We only have 19 users right now, with about 22GB in /opt/zimbra/store and 1.8GB in /opt/zimbra/db. Last week, /opt/zimbra/index shot up about 1.5-2GB in size in something like an hour, even though the overall message store didn't increase nearly that much in the same amount of time.