subinterface boogers...

when a subinterface is created there are boogers left behind, but they don't show up in show run or show start, they only show up when you show run interface;

r2620_03(config)#int fa0/0.1
r2620_03(config-subif)#encap dot1q 100
r2620_03(config-subif)#do sh run int fa0/0.1
Building configuration...

Current configuration : 60 bytes
!
interface FastEthernet0/0.1
 encapsulation dot1Q 100
end

r2620_03(config-subif)#exit
r2620_03(config)#no int fa0/0.1
% Not all config may be removed and may reappear after reactivating the sub-inte
rface

r2620_03(config)#do sh run int fa0/0.1
Building configuration...

Current configuration : 5 bytes
end
(this means my current configuration bytes)

r2620_03(config)#

i have subinterface boogers and ether crickets on me...