I started getting this error after upgrading from FC9 to FC10.
$ uname -a
Linux rick.gator.edu 2.6.27.5-117.fc10.i686 #1 SMP Tue Nov 18 12:19:59 EST 2008 i686 i686 i386 GNU/Linux
I can recreate the error by going to a web page with Flash such as
http://www.adobe.com/shockwave/welcome/
The SEtroubleshoot browser has the following error message summary:
SELinux is preventing the npviewer.bin from using potentially mislabeled files (/home/rchu/.icedteaplugin/icedtea-plugin-to-appletviewer).
Raw Audit Messages :
node=rick.gator.edu type=AVC msg=audit(1228921474.137:1062): avc: denied { write } for pid=14329 comm="npviewer.bin" path="/home/rchu/.icedteaplugin/icedtea-plugin-to-appletviewer" dev=dm-0 ino=4752466 scontext=unconfined_u:unconfined_r:nsplugin_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=fifo_file node=rick.gator.edu type=AVC msg=audit(1228921474.137:1062): avc: denied { read } for pid=14329 comm="npviewer.bin" path="/home/rchu/.icedteaplugin/icedtea-appletviewer-to-plugin" dev=dm-0 ino=4752465 scontext=unconfined_u:unconfined_r:nsplugin_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=fifo_file node=rick.gator.edu type=SYSCALL msg=audit(1228921474.137:1062): arch=40000003 syscall=11 success=yes exit=0 a0=8722840 a1=8722780 a2=8722ce0 a3=0 items=0 ppid=2842 pid=14329 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="npviewer.bin" exe="/usr/lib/nspluginwrapper/npviewer.bin" subj=unconfined_u:unconfined_r:nsplugin_t:s0-s0:c0.c1023 key=(null)
I ran the recommended( by SEtroubleshoot) restorecon -v command but no apparent change.
Rick