OK, sure. It's XP, Vista, 2003 and 2008 problem (as the link above acknowledges). I've mentioned the XP only because that's the only version out of these that's still used by some.
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
Thanks for the details. But to be honest, I do not think we are going to fix an XP-only problem.
Some servers (mostly servers running on the older versions of Windows) incorrectly adjust file timestamp with start of DST. The Daylight saving time option allows you to counterweight the incorrect behavior.
The option is not supported with FTP protocol. The option is also not available with WebDAV protocol, as with it, no issues are known that would require it.