I upgraded from 1.171 to 1.175 and got the log below at webserver startup. I
switched down to 1.174 and I'm ok again.

[22/Jan/2008:16:44:32] failure (14188): Failed to initialize Hudson
java.lang.IllegalArgumentException: No beans of interface
org.acegisecurity.userdetails.UserDetailsService are defined
at hudson.security.SecurityRealm.findBean(SecurityRealm.java:154)
at
hudson.security.LDAPSecurityRealm.createSecurityComponents(LDAPSecurityRealm.java:131)
at hudson.model.Hudson.setSecurityRealm(Hudson.java:957)
at hudson.model.Hudson.load(Hudson.java:1285)
at hudson.model.Hudson.<init>(Hudson.java:345)
at hudson.WebAppMain$2.run(WebAppMain.java:129)

[22/Jan/2008:16:44:32] warning (14188): CORE3283: stderr: Exception in thread
"hudson initialization thread" java.lang.IllegalArgumentException: No beans of
interface org.acegisecurity.userdetails.UserDetailsService are defined
[22/Jan/2008:16:44:32] warning (14188): CORE3283: stderr: at
hudson.security.SecurityRealm.findBean(SecurityRealm.java:154)
[22/Jan/2008:16:44:32] warning (14188): CORE3283: stderr: at
hudson.security.LDAPSecurityRealm.createSecurityComponents(LDAPSecurityRealm.java:131)
[22/Jan/2008:16:44:32] warning (14188): CORE3283: stderr: at
hudson.model.Hudson.setSecurityRealm(Hudson.java:957)
[22/Jan/2008:16:44:32] warning (14188): CORE3283: stderr: at
hudson.model.Hudson.load(Hudson.java:1285)
[22/Jan/2008:16:44:32] warning (14188): CORE3283: stderr: at
hudson.model.Hudson.<init>(Hudson.java:345)
[22/Jan/2008:16:44:32] warning (14188): CORE3283: stderr: at
hudson.WebAppMain$2.run(WebAppMain.java:129)

Container: SJSWS 7.0u2
Authentication: LDAP / matrix security