[cmart]

из документации:

Flash Player 5 handles daylight saving time on the following operating systems as follows:

Windows—the U.S. rules for daylight saving time are always applied, which leads to incorrect transitions in Europe and other areas that employ daylight saving time but have different transition times than the U.S. Flash correctly detects whether DST is employed in the current locale.

То есть через пару дней все будет правильно, когда в америке часы переведут.