since installed FC3 on my box (all fine, no dramatically progs or services or...), dmesg shows the following messages:


audit(1105075273.580:0): avc: denied { getattr } for pid=2731 exe=/usr/sbin/squid path=/boot dev=hda2 ino=2 scontext=user_u:system_r:squid_t tcontext=system_ubject_r:boot_t tclass=dir
audit(1105075273.580:0): avc: denied { getattr } for pid=2731 exe=/usr/sbin/squid path=/data dev=hda5 ino=2 scontext=user_u:system_r:squid_t tcontext=system_ubject_r:file_t tclass=dir
audit(1105078868.729:0): avc: denied { search } for pid=2740 exe=/usr/sbin/httpd name=compatibility dev=hda7 ino=1150086 scontext=user_u:system_r:httpd_t tcontext=rootbject_r:user_home_t tclass=dir
audit(1105078868.737:0): avc: denied { getattr } for pid=2740 exe=/usr/sbin/httpd path=/usr/share/squirrelmail/plugins/compatibility dev=hda7 ino=1150086 scontext=user_u:system_r:httpd_t tcontext=rootbject_r:user_home_t tclass=dir
audit(1105078868.737:0): avc: denied { getattr } for pid=2740 exe=/usr/sbin/httpd path=/usr/share/squirrelmail/plugins/compatibility/setup.php dev=hda7 ino=1150091 scontext=user_u:system_r:httpd_t tcontext=rootbject_r:user_home_t tclass=file
audit(1105078868.737:0): avc: denied { read } for pid=2740 exe=/usr/sbin/httpd name=setup.php dev=hda7 ino=1150091 scontext=user_u:system_r:httpd_t tcontext=rootbject_r:user_home_t tclass=file

has it something to do with SELinux? Any Hints?..
Greetz

Yes, that's SELinux. Be sure to install all update packages and to read the SELinux HOWTO. If it persists, there's http://bugzilla.redhat.com for bug reports.