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Ridiculous numbers showing in Cat4500e interface packet counters

I have a Cat 4506e stack (two Chassis), and I'm finding that some interfaces are reporting nonsensical, fast-increasing byte counters:

GigabitEthernet1/2/43 is up, line protocol is up (connected) 
  Hardware is Gigabit Ethernet Port, address is 0026.0b5a.0c9a (bia 0026.0b5a.0c9a)
  Description: asa1_enformion
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec, 
     reliability 255/255, txload 1/255, rxload 195/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX
  input flow-control is on, output flow-control is off
  Auto-MDIX on (operational: on)
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 00:00:51
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 1000 bits/sec, 1 packets/sec
     9 packets input, 4571189126 bytes, 0 no buffer
     Received 0 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles 
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     153 packets output, 17186 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

A subsequent 'show int gi1/2/43' a few minutes later shows:

63 packets input, 30285617770 bytes, 0 no buffer

This is throwing my interface graphs WAY off.  Is there a fix for this that doesn't involve an IOS-XE upgrade?

Interfaces are on a WS-X4648-RJ45V-E

We're running the following:

ROM: 15.0(1r)SG5
coresw2 uptime is 1 year, 12 weeks, 6 days, 2 hours, 59 minutes
Uptime for this control processor is 10 weeks, 1 day, 1 hour, 12 minutes
System returned to ROM by SSO Switchover
System restarted at 16:50:10 PDT Thu Aug 14 2014
System image file is "bootflash:/cat4500e-universalk9.SPA.03.04.01.SG.151-2.SG1.bin"
Jawa Revision 7, Snowtrooper Revision 0x0.0x1C

 

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