With the new forum software upgrade, the time stamped on each post is now determined by your personal preference of time zone. That over-rides the time that the forum always used to put out. The default is UTC Greenwich Mean Time.
If the time stamp on posts is not accurate, follow this procedure
* Click on your user name on the upper right corner and choose "Preferences"
* Scroll down to the drop down menu for "Your Timezone" click on that
* Choose the time from the list that is close to your local time
* Scroll to the bottom of the page and click the "Save Changes" button
That should do it.