ssh -l root cms-proto-th1
cd /home/www/shibboleth/etc/shibboleth/
vi shibboleth.xml
line 146: change timeout value. it is in seconds
1 hour = 3600 seconds -- this is the value that should be there when not in testing mode
save file
restart web server: /etc/init.d/web restart
restart shibd: /etc/init.d/shibd restart