When you Put or Synchronize files after time changes occur in the Spring or Fall (for example U.S. Daylight Savings Time), Dreamweaver displays the following false warning messages:

“my_file.htm has changed on the remote server since your last get or put operation. Putting it may overwrite changes to the file. Do you wish to put the file anyway?”

This warning only occurs the first time you try to upload each file. Subsequent uploads do not give this warning.

You may also experience similar problems with the Dreamweaver synchronize feature if you change the time zone of your client machine, for example, while traveling. (Ref. 202143)

Microsoft Windows-based applications that use the TZ environment variable may not work as expected because of changes to daylight saving time (DST). Starting in the spring of 2007, the DST start date and the DST end date for the United States will transition to comply with the Energy Policy Act of 2005. DST in the United States will start three weeks earlier (2:00 A.M. on the second Sunday in March) and will end one week later (2:00 A.M. on the first Sunday in November) than in previous years.

In Windows Vista, in Microsoft Windows Server 2003, and in Microsoft Windows XP, when you use the TZ environment variable, the C Run-Time (CRT) localtime function and the CRT _localtime64 function will not correctly recognize DST. These functions will recognize DST as starting on the first Sunday of April and as ending on the last Sunday of October for all dates.

The U.S. Energy Policy Act of 2005, passed by the U.S. Congress July, 2005, extended daylight saving time (DST) in the United States. Beginning in 2007, DST will start three weeks earlier and end one week later than previously observed, resulting in a new DST period that is four weeks longer than previously observed. In 2007, DST will start on on March 11 and will end on November 4, 2007.

This change in DST applies to the United States and to Canada. Unless you apply this fix, the time that Microsoft Windows Services for UNIX returns and the time that utilities and time-related APIs in Subsystem for UNIX-based Applications return may be incorrect during this four-week period, depending on the location in the United States or in Canada and on the selected time zone.