Hi there!
This Joomla plugin Optimze tables by time is really great and I have make a review at Joomla JED
http://extensions.joomla.org/extensions/hosting-a-servers/database-management/648But I have problem when using it with it using php 5.3.3 got this error. I work perfect otherwize
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CDT/-5.0/DST' instead in /home/site/public_html/plugins/system/optimizetables.php on line 25
Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CDT/-5.0/DST' instead in /home/site/public_html/plugins/system/optimizetables.php on line 30
How can this be fixed?

rgds