I've just started using selinux in the last 6 months and am getting to grips with it. 
However, using sealert on a new CENTOS 6 server, Im not getting the level of detail I was with CENTOS 5. To illustrate:
Running 
sealert -a /var/log/audit/audit.log 
On CENTOS 5 I get:
  Summary:
  
  SELinux is preventing postdrop (postfix_postdrop_t) "getattr" to
  /var/log/httpd/error_log (httpd_log_t).
  
  Detailed Description:
  
  SELinux denied access requested by postdrop. It is not expected that
  this access is required by postdrop and this access may signal an
  intrusion attempt. It is also possible that the specific version or
  configuration of the application is causing it to require additional
  access.
  
  Allowing Access:
  
  Sometimes labeling problems can cause SELinux denials. You could try
  to restore the default system file context for
  /var/log/httpd/error_log,
  
  restorecon -v '/var/log/httpd/error_log'
  
  If this does not work, there is currently no automatic way to allow
  this access. Instead, you can generate a local policy module to allow
  this access - see FAQ
  (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Or you can
  disable SELinux protection altogether. Disabling SELinux protection is
  not recommended. Please file a bug report
  (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this
  package.
  
  Additional Information:
  
  Source Context                root:system_r:postfix_postdrop_t Target
  Context                system_u:object_r:httpd_log_t Target Objects
  /var/log/httpd/error_log [ file ] Source
  postdrop Source Path                   /usr/sbin/postdrop Port
   Host                           Source RPM Packages 
  postfix-2.3.3-2.1.el5_2 Target RPM Packages Policy RPM
  selinux-policy-2.4.6-279.el5_5.1 Selinux Enabled               True
  Policy Type                   targeted MLS Enabled
  True Enforcing Mode                Enforcing Plugin Name
  catchall_file Host Name
  server109-228-26-144.live-servers.net Platform
  Linux server109-228-26-144.live-servers.net
                                2.6.18-194.8.1.el5 #1 SMP Thu Jul 1 19:04:48 EDT
                                2010 x86_64 x86_64 Alert Count                   1 First Seen                    Wed Jun 13 11:43:55 2012 Last Seen
  Wed Jun 13 11:43:55 2012
but on CENTOS 6 I just get:
  Summary:
  
  SELinux is preventing postdrop (postfix_postdrop_t) "getattr" to
  /var/log/httpd/error_log (httpd_log_t).
  
  Detailed Description:
  
  SELinux denied access requested by postdrop. It is not expected that
  this access is required by postdrop and this access may signal an
  intrusion attempt. It is also possible that the specific version or
  configuration of the application is causing it to require additional
  access.
  
  Allowing Access:
  
  Sometimes labeling problems can cause SELinux denials. You could try
  to restore the default system file context for
  /var/log/httpd/error_log,
  
  restorecon -v '/var/log/httpd/error_log'
  
  If this does not work, there is currently no automatic way to allow
  this access. Instead, you can generate a local policy module to allow
  this access - see FAQ
  (http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Or you can
  disable SELinux protection altogether. Disabling SELinux protection is
  not recommended. Please file a bug report
  (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this
  package.
Im running exactly the same command. Does anyone have any idea why Im not getting the "Additional information" that I do with CENTOS 5?
Thanks in advance
Dylan