My FC2's system clock is very slow, every hour it loses more than 30 min when the system is running, is there a way to find out the reason and correct it? Thanks.
I can't explain why your system clock would be losing time, but you may be able to alleviate the problem by running ntpd.
Edit /etc/ntp.conf and add some clock servers.
Good choices are time.windows.com (hey they at-least run a reliable clock server) and time.apple.com (so does apple).
server time.windows.com server time.apple.com
Edit /etc/ntp/step-tickers and add the same clock servers
time.windows.com time.apple.com
No start it.
;/etc/init.d/ntpd start
Add it to your run levels using chkconfig or other methods.