NASLite Network Attached Storage

Hi, I was hoping you could shed some light on a problem I am having. We have two identical units, both are doing the exact same thing. If we throw a lot of data at the units which are used for around 15 servers backups, limited shared file storage for our FAX / Scanner, etc... The network statistics stop working correctly. You get nothing under hourly statistics, daily activity works (but with incorrect totals, way too low) for four to five days then just stops.
Under weekly activity you get numbers way too low for weekly and 7 day totals but nothing for current week or estimated. We do get totals under monthly activity, but once again way to low and being incorrect are more or less not useful. Only noticed this in the last week because normally its not a concern. But since we are putting larger daily loads on them I wanted to track the changes.

Here is the basic system config.
Both systems are identical.
AMD Phenom 3.7GHz 4 core
8GB 1300MHz RAM
Adaptec 51245 with eight 2TB WD Black SATA II drives, four Toshiba 500GB 2.5 inch drive. Configured as three volumes RAID 10.
Intel Pro network card.
Boots off a 8GB USB 2 Flash

Here is the stats
0000:05:00.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:1b:21:80:a1:21
0000:05:00.0: eth0: Intel(R) PRO/1000 Network Connection
0000:05:00.0: eth0: MAC: 3, PHY: 8, PBA No: e46981-004
e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
eth0 Link encap:Ethernet HWaddr 00:1B:21:80:A1:21
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2742284713 errors:1 dropped:0 overruns:0 frame:1
TX packets:2118317549 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3895221135347 (3.5 TiB) TX bytes:1726555132634 (1.5 TiB)
Memory:febc0000-febe0000