[rancid] Contents of nvram alternating

[Buchan Milne]

On some of our 6500's, and one 7600, I see something like this:


  !Flash: 1672932 bytes available (30308636 bytes used)
  !
+ !Flash: nvram: Directory of nvram:/
+ !Flash: nvram:   382  -rw-       34497                    <no date>  
startup-config
+ !Flash: nvram:   383  ----        1932                    <no date>  
private-config
+ !Flash: nvram:   384  -rw-       34497                    <no date>  
underlying-config
+ !Flash: nvram:     2  ----          47                    <no date>  
persistent-data
+ !Flash: nvram:     3  ----           4                    <no date>  
rf_cold_starts
+ !Flash: nvram: 391160 bytes total (351607 bytes free)
+ !
  !Flash: bootflash: Directory of bootflash:/

then on the next run:
  !Flash: 1672932 bytes available (30308636 bytes used)
  !
  !Flash: nvram: Directory of nvram:/
- !Flash: nvram:   382  -rw-       34497                    <no date>  
startup-config
- !Flash: nvram:   383  ----        1932                    <no date>  
private-config
- !Flash: nvram:   384  -rw-       34497                    <no date>  
underlying-config
- !Flash: nvram:     2  ----          47                    <no date>  
persistent-data
- !Flash: nvram:     3  ----           4                    <no date>  
rf_cold_starts
+ !Flash: nvram: No files in directory
  !Flash: nvram: 391160 bytes total (351607 bytes free)
  !
  !Flash: bootflash: Directory of bootflash:/


and the next run:
  !Flash: 1672932 bytes available (30308636 bytes used)
  !
- !Flash: nvram: Directory of nvram:/
- !Flash: nvram: No files in directory
- !Flash: nvram: 391160 bytes total (351607 bytes free)
- !
  !Flash: bootflash: Directory of bootflash:/


The network engineer claims there is nothing wrong with this device ...

Has anyone seen this? Is there anything I can do about it besides removing the 
nvram directory listing from rancid?

Regards,
Buchan