We are having what appears to a caching problem with winbind going against an ActiveDirectory server. It seems that each and every request for user or group information causes a cache update regardless of the time interval between requests. This causes a very large performance problem since subsequent requests seem to queue behind the initial request until all of the cache updates are complete. According to the documentation, winbind cache updates should only occur if the items in the cache have expired and the entry on the ActiveDirectory server has changed. What could be causing our winbind cache to behave the way it is behaving? Are there any good resources for troubleshooting performance problems such as this? Is there some way to limit the organizational unit used by samba/winbind so that the queries are faster? Below are the versions of software we are using: samba-3.0.14a-1 krb5-libs-1.2.7-47 krb5-devel-1.2.7-19 krb5-workstation-1.2.7-47 pam-0.75-51 Thanks for any help. -thom