Description of problem:
Dear sir,
i have install tomcat6 package ans they are somme bad permission:
# ls -ld /etc/tomcat6/Catalina/localhost
drwxr-xr-x. 2 root tomcat 4096 22 déc.  11:26 /etc/tomcat6/Catalina/localhost

# ls -ld /var/log/tomcat6
drwxr-xr-x. 2 root tomcat 4096 17 mars  21:52 /var/log/tomcat6

For launch succefully tomcat need change permission same as:
# chmod -R g+w /var/log/tomcat6 /etc/tomcat6/Catalina

And restart tomcat6
# service tomcat6 restart
Stopping tomcat6:                                          [  OK  ]
Starting tomcat6:                                          [  OK  ]