I have a DLink-825 Gigabit router with wired connections between the LS-WTGL/R1 and a desktop PC. The PC reports the connection as 1.0 Gbps to the router. But file transfers from the NAS max out at about 2Mb/sec. Plugging the NAS directly into the PC doesn't significantly impact the speed. All three items are within 10 feet of each other. If it matters, the NAS is in a RAID 1 configuration. Is this speed correct for this NAS?