NTLM Password Cache on Squid ?

[Phibee Network Operation Center <noc@xxxxxxxxxx>]

Hi

we have a small problems ... :

   - We use Squid with Windbind/NTLM auth

   - When we change a password on the Active Directory,
   squid don't see the change before a lot of hours ...

he have a cache ? can i put a TTL ?

thanks for your help
jerome