I am using PHP 5.3, and even in index.php I see:
Warning: mktime() [function.mktime]: 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/New_York' for 'EDT/-4.0/DST' instead
This is because mktime() is used with no arguments in:
inc/classes/BxDolTemplate.php on line 302
templates/base/scripts/BxBaseFunctions.php on line 156
The fix is to use time() instead of mktime()
Hope to see this change in the next beta :)
Robert