[rancid] Newbie question: I get an email every hour even when nothing has changed.

[Alan Evans]

Hello group,

I just installed rancid today and I think I've done something wrong but
can't figure out what.
I get an email every hour even though nothing has changed. Below is a
snipet from the email.

It looks to me like the output from "dir /all nvram:" keeps changing
every time rancid-run executes. 
Sometimes the prefix is "!Flash: nvram:" and sometimes the prefix is
"!Flash: :".

Anyone have any clues of what I've done wrong?

Thanks in advance
AlanE

retrieving revision 1.7
diff -u -4 -r1.7 10.10.26.62
@@ -28,52 +28,52 @@
  !Variable: BOOT variable =
bootdisk:s72033-ipservices_wan-mz.122-18.SXF4.bin,1;
  !Variable: CONFIG_FILE variable does not exist
  !Variable: BOOTLDR variable =
  !
- !Flash: nvram: Directory of nvram:/
- !Flash: nvram:  1918  -rw-       30609                    <no date>
startup-config
- !Flash: nvram:  1919  ----           5                    <no date>
private-config
- !Flash: nvram:  1920  -rw-       30609                    <no date>
underlying-config
- !Flash: nvram:     1  ----           4                    <no date>
rf_cold_starts
- !Flash: nvram:     2  ----          49                    <no date>
persistent-data
- !Flash: nvram:     3  -rw-           0                    <no date>
ifIndex-table
- !Flash: nvram: 1964024 bytes total (1930286 bytes free)
+ !Flash: : Directory of nvram:/
+ !Flash: :  1918  -rw-       30609                    <no date>
startup-config
+ !Flash: :  1919  ----           5                    <no date>
private-config
+ !Flash: :  1920  -rw-       30609                    <no date>
underlying-config
+ !Flash: :     1  ----           4                    <no date>
rf_cold_starts
+ !Flash: :     2  ----          49                    <no date>
persistent-data
+ !Flash: :     3  -rw-           0                    <no date>
ifIndex-table
+ !Flash: : 1964024 bytes total (1930286 bytes free)
  !