Question Latest Visit Date Showing 1999

Guys, need some help. I'm using Kunena 1.61 with Joomla 1.5.21.
Having trouble with Last Visit Date, it show 1999. how can I fix it? Thanks.

All my users panic, when see that date of their last visit - 1999.

Hi all, i've 1.6.4 v installed and there was the very problem: After logging in there was a welcome string and there was the last visit string just a bid down. I fixed that problem as followed: in a file /components/com_kunena/template/default (or probably any other theme folder)/loginbox/logout.php i fount and replaced this string: <li class="kms"><strong><?php echo JText::_('COM_KUNENA_MYPROFILE_LASTVISITDATE'); ?>:</strong> <span title="<?php echo CKunenaTimeformat::showDate($this->user->lastvisitDate, 'ago', 'utc'); ?>"><?php echo CKunenaTimeformat::showDate($this->user->lastvisitDate, 'date_today', 'utc'); ?></span></li>
by tis string: <?php if ($this->user->lastvisitDate != "0000-00-00 00:00:00"): ?><li><?php echo JText::_('COM_KUNENA_MYPROFILE_LASTVISITDATE'); ?>:<span title="<?php echo CKunenaTimeformat::showDate($this->user->lastvisitDate, 'ago', 'utc'); ?>"><?php echo CKunenaTimeformat::showDate($this->user->lastvisitDate, 'date_today', 'utc'); ?></span></li><?php endif; ?>
In this case the string "last visit" will not appear on the first visit, and a visitor will not get confused by year 1999.

actually i've made a little bit different thing: On the first enter to the account a visitor can see "it is your first visit" but for this case i had to add a new string to my language file. I am not going into particulars, i think the first case is enough
Regards!

This must be fixed in Kunena 1.6.5