Comment 1 for bug 1005575

I have the same issue. The clock worked for some time after installing Mint13 but somehow it doesn't update the time in the cinnamon panel now. The time is shown correct in the 'date and time setting' and on console using 'date' command.
On login and on time format change for the panel clock the current time is set in the panel clock, but then it is not updated any further and stays at the time of login or when the settings were changed.