Summary:
Most likely an update of mono (2.4.3.1) has introduced a couple of new SELinux alerts for podsleuth. All of them seem to be related to accessing semaphores and shared memory:

1. "read write" on /dev/shm/mono-shared-0-shared_data... (detailed report below)
2. "getattr" on /dev/shm/mono-shared-0-shared_data...
3. "unix_read unix_write" and "read write" on "None [sem]"
tcontext=unconfined_u:unconfined_r:unconfined_mono_t:s0 tclass=sem



SELinux is preventing /usr/bin/mono "read write" access on
mono-shared-0-shared_data-(removed)-Linux-i686-312-12-0.

Detailed Description:

[SELinux is in permissive mode. This access was not denied.]

SELinux denied access requested by mono. It is not expected that this access is
required by mono 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:

You can generate a local policy module to allow this access - see FAQ
(http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Please file a bug
report.

Additional Information:

Source Context                system_u:system_r:podsleuth_t:s0
Target Context                unconfined_u:object_r:user_tmpfs_t:s0
Target Objects                mono-shared-0-shared_data-(removed)-
                              Linux-i686-312-12-0 [ file ]
Source                        mono
Source Path                   /usr/bin/mono
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           mono-core-2.4.3.1-1.fc12
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.32-66.fc12
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Plugin Name                   catchall
Host Name                     (removed)
Platform                      Linux (removed) 2.6.31.9-174.fc12.i686.PAE #1 SMP Mon
                              Dec 21 06:04:56 UTC 2009 i686 i686
Alert Count                   10
First Seen                    Sun 17 Jan 2010 12:08:02 AM CET
Last Seen                     Sun 17 Jan 2010 12:39:55 AM CET
Local ID                      8448927a-bb9f-47e7-9c93-1fe8bbaa63c3
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1263685195.806:49): avc:  denied  { read write } for  pid=3538 comm="mono" name="mono-shared-0-shared_data-(removed)-Linux-i686-312-12-0" dev=tmpfs ino=207164 scontext=system_u:system_r:podsleuth_t:s0 tcontext=unconfined_u:object_r:user_tmpfs_t:s0 tclass=file

node=(removed) type=AVC msg=audit(1263685195.806:49): avc:  denied  { open } for  pid=3538 comm="mono" name="mono-shared-0-shared_data-(removed)-Linux-i686-312-12-0" dev=tmpfs ino=207164 scontext=system_u:system_r:podsleuth_t:s0 tcontext=unconfined_u:object_r:user_tmpfs_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1263685195.806:49): arch=40000003 syscall=5 per=400000 success=yes exit=3 a0=bfa58970 a1=a0042 a2=1a0 a3=8fedb39 items=0 ppid=3535 pid=3538 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="mono" exe="/usr/bin/mono" subj=system_u:system_r:podsleuth_t:s0 key=(null)