Description:
------------
When you try to create a succession of months using the following code, you will notice a very ugly bug that results in skipping months

Test script:
---------------
for(
				$i = strtotime("2004-10-01" );
				$i <= mktime();
				$i += (24*60*60 * cal_days_in_month( CAL_GREGORIAN, date("m", $i), date("Y", $i) ))
			) {
				$year_month = date("Ymd H:i:s", $i);
				echo "<br />".$year_month;
			}

Expected result:
----------------
20041001 00:00:00
20041101 00:00:00
20041201 00:00:00

Actual result:
--------------
20041001 00:00:00
20041031 23:00:00
20041201 23:00:00