We were using quickbuild for last 3-4 months in our organization and all of sudden ldap authentication started behaving in
Some unexpected way, it was not able to authenticate any of the ldap users, when looked into log I saw following error.

2007-11-14 15:55:20,691 [http-8282-Processor24] DEBUG com.pmease.quickbuild.security.QuickBuildAuthenticationProcessingFilter - Updated SecurityContextHolder to contain null Authentication
2007-11-14 15:55:20,691 [http-8282-Processor24] DEBUG com.pmease.quickbuild.security.QuickBuildAuthenticationProcessingFilter - Authentication request failed: org.acegisecurity.AuthenticationServiceException: [LDAP: error code 49 - 80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 525, vece ]
 
We tried to figure out but all in vein, so I though it right to take your help.
My ldap setting are as follows

LDAP URL : ldap://adpun1.geometric.local:389
Follow referrals : No
Bind user: CN=scmadmin,OU=users,OU=Pune,dc=geometric,dc=local
Bind password: **********
User search base: dc=geometric, dc= local
User search filter: (&(sAMAccountName={0})(objectclass=person))
User full name attribute: CN
Group Search base: dc=geometric, dc=local