Check the timezone that the computer is set to. Perhaps the "time" is correct based on time zone. For example, network server is on PST and one laptop is on EST. Although the server might be 12:00 PM, the EST laptop might show 3:00 PM, which would be correct. So I'd look at that first.
From time to time, we have been tempted to believe that society has become too complex to be managed by self-rule, that government by an elite group is superior to government for, by, and of the people. But if no one among us is capable of governing himself, then who among us has the capacity to govern someone else?
-Ronald Reagan, 1981 Inaugural Address-