Interfaces reset when disable signature.

Question

Hi Guys.
When i ingress the next script in order to disable signature, the interfaces of the Ips cisco 4240 are restart, someone have any clue is so extrange just for disabling an signature?              
config term
service signature-definition sig0
signatures 9202 0
status
enabled false
exit
exit
Aug 13 23:59:35.229: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/25, changed state to up
Aug 13 23:59:35.280: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/26, changed state to up
GigabitEthernet1/0/25 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is e8b7.4843.b099 (bia e8b7.4843.b099)
  Description: ****  IPS-A ****
GigabitEthernet1/0/26 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is e8b7.4843.b09a (bia e8b7.4843.b09a)
  Description: ****  IPS-B ****
Tahnk you.

Answer 1

Hi.
At this moment i just try to do that to disable the signature.
! Current configuration last modified Tue Aug 13 18:02:59 2013
! Version 7.0(5a)
! Host:
!     Realm Keys          key1.0
! Signature Definition:
!     Signature Update    S609.0   2011-11-11
service interface
physical-interfaces GigabitEthernet0/0
admin-state enabled
duplex full
speed 1000
subinterface-type inline-vlan-pair
subinterface 1
vlan1 10
vlan2 11
exit
exit
exit
physical-interfaces GigabitEthernet0/1
admin-state enabled
duplex full
speed 1000
subinterface-type inline-vlan-pair
subinterface 1
vlan1 10
vlan2 11
exit
exit
exit
bypass-mode off
exit