SELinux is preventing /opt/TweetDeck/bin/TweetDeck from using the 'execstack' accesses on a process.

*****  Plugin allow_execstack (53.1 confidence) suggests  ********************

If you do not think /opt/TweetDeck/bin/TweetDeck should need to map stack memory that is both writable and executable.
Then you need to report a bug. This is a potentially dangerous access.
Do
contact your security administrator and report this issue.

*****  Plugin catchall_boolean (42.6 confidence) suggests  *******************

If you want to allow unconfined executables to make their stack executable.  This should never, ever be necessary. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla
Then you must tell SELinux about this by enabling the 'allow_execstack' boolean.
Do
setsebool -P allow_execstack 1

*****  Plugin catchall (5.76 confidence) suggests  ***************************

If you believe that TweetDeck should be allowed execstack access on processes labeled unconfined_t by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep TweetDeck /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Objects                Unknown [ process ]
Source                        TweetDeck
Source Path                   /opt/TweetDeck/bin/TweetDeck
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           nautilus-2.32.2.1-1.fc14
Target RPM Packages           
Policy RPM                    selinux-policy-3.9.7-19.fc14
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 2.6.35.10-72.fc14.i686 #1
                              SMP Mon Dec 20 22:05:49 UTC 2010 i686 i686
Alert Count                   17
First Seen                    Fri 24 Dec 2010 02:38:28 AM EET
Last Seen                     Sun 16 Jan 2011 08:17:32 PM EET
Local ID                      ff59ad11-05e6-4746-a704-5ec2eda0df5d

Raw Audit Messages
type=AVC msg=audit(1295201852.682:34103): avc:  denied  { execstack } for  pid=3849 comm="nautilus" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process

TweetDeck,unconfined_t,unconfined_t,process,execstack
type=SYSCALL msg=audit(1295201852.682:34103): arch=i386 syscall=mprotect success=yes exit=0 a0=bfdac000 a1=1000 a2=1000007 a3=bfdab0ec items=0 ppid=3676 pid=3849 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm=nautilus exe=/usr/bin/nautilus subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
TweetDeck,unconfined_t,unconfined_t,process,execstack

#============= unconfined_t ==============
#!!!! This avc is allowed in the current policy

allow unconfined_t self:process execstack;