The following was filed automatically by setroubleshoot:

Summary:

SELinux is preventing the polkitd from using potentially mislabeled files
(user-dirs.dirs).

Detailed Description:

[SELinux is in permissive mode, the operation would have been denied but was
permitted due to permissive mode.]

SELinux has denied polkitd access to potentially mislabeled file(s)
(user-dirs.dirs). This means that SELinux will not allow polkitd to use these
files. It is common for users to edit files in their home directory or tmp
directories and then move (mv) them to system directories. The problem is that
the files end up with the wrong file context which confined applications are not
allowed to access.

Allowing Access:

If you want polkitd to access this files, you need to relabel them using
restorecon -v 'user-dirs.dirs'. You might want to relabel the entire directory
using restorecon -R -v ''.

Additional Information:

Source Context                system_u:system_r:policykit_t:s0-s0:c0.c1023
Target Context                unconfined_u:object_r:admin_home_t:s0
Target Objects                user-dirs.dirs [ file ]
Source                        polkitd
Source Path                   /usr/libexec/polkit-1/polkitd
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           polkit-0.93-3.fc12
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.26-2.fc12
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Permissive
Plugin Name                   home_tmp_bad_labels
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.31-0.122.rc5.git2.fc12.i686.PAE #1 SMP Mon Aug
                              3 12:59:02 EDT 2009 i686 i686
Alert Count                   6
First Seen                    Sat 01 Aug 2009 09:50:39 PM EDT
Last Seen                     Tue 04 Aug 2009 10:37:39 PM EDT
Local ID                      302a633b-442a-41ca-a5c6-b7551d474a1d
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1249439859.255:23361): avc:  denied  { read } for  pid=1735 comm="polkitd" name="user-dirs.dirs" dev=sdc3 ino=4776102 scontext=system_u:system_r:policykit_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:admin_home_t:s0 tclass=file

node=(removed) type=AVC msg=audit(1249439859.255:23361): avc:  denied  { open } for  pid=1735 comm="polkitd" name="user-dirs.dirs" dev=sdc3 ino=4776102 scontext=system_u:system_r:policykit_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:admin_home_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1249439859.255:23361): arch=40000003 syscall=5 success=yes exit=7 a0=88ec0b8 a1=8000 a2=0 a3=88ec0e0 items=0 ppid=1734 pid=1735 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="polkitd" exe="/usr/libexec/polkit-1/polkitd" subj=system_u:system_r:policykit_t:s0-s0:c0.c1023 key=(null)


audit2allow suggests:

#============= policykit_t ==============
allow policykit_t admin_home_t:file { read open };