Hi, I am trying to use squid proxy with validation on win 2003 active directory to filter internet navigation and for it I installed an ubuntu 10.04 server 64 bit with samba. My installation looks ok, the server is joined to the AD, ntlm is able to validate user, wbinfo report corret information and squid works good. The problem arise after some hours: winbind become not able to resolv info for users and to retrieve info for groups, so squid become not able to know id a user belong to a group allowed to navigate and refuse connection. Restarting winbind solve the problem for some hours. wbinfo report no particular problem; just give back messages like "could not get info for user xx" and also setting debuglevel to various numbers reports (to me) no significant clues. I made a workaround scheduling a restart of winbind service at every half hour and it works, but is not so elegant ... Do you have any suggestion to solve this problem? Thank you Daniele samba/winbind version is 3.4.7 squid is 2.7.STABLE7 os is 2.6.32-41-server #88-Ubuntu x86_64 GNU/Linux smb.conf: [global] workgroup = CED realm = CED.AOS server string = Samba Server Version %v security = ADS password server = 172.18.10.24 172.18.10.23 name resolve order = lmhosts host bcast ldap ssl = no idmap uid = 15000-25000 idmap gid = 15000-25000 winbind separator = + winbind enum users = Yes winbind enum groups = Yes winbind use default domain = Yes cups options = raw [homes] comment = Home Directories read only = No browseable = No browsable = No [printers] comment = All Printers path = /var/spool/samba printable = Yes browseable = No browsable = No ---- Le informazioni contenute in questa comunicazione e gli eventuali documenti allegati hanno carattere confidenziale e sono ad uso esclusivo del destinatario. Nel caso in cui questa comunicazione Vi sia pervenuta per errore, Vi informiamo che la sua diffusione e riproduzione e' contraria alla legge, pertanto Vi preghiamo di darci prontamente avviso e di cancellare quanto ricevuto. Grazie. This e-mail message and any files transmitted with it contain confidential information intended only for the person(s) to whom it is addressed. If you are not the intended recipient, you are hereby notified that any use or distribution of this e-mail is strictly prohibited: please notify the sender and delete the original message. Thank you.