Hi guys and girls

So here is the problem. My BB has this weird thing with SMS messages.
Current date/time is set correctly, but something is wrong with how the messages are sorted in the SMS and MMS folder: I just received a message that was filed as received on Nov4. My reply to this message is showing as Nov 3 in the list of messages.
However, if I actually click on the message I received, the time/date is correct. It's just the sorting in the SMS/MMS folder that is messed up.
Any ideas how to fix that? I updated to the latest os from rogers about 2-3 weeks ago, but I never noticed any problems, it did not start immediately after the update.
Thanks!