Glad you got it fixed. You might try turning off the 'Set Time Zone automatically' setting in Windows if you haven't already. I think Windows sometimes has a mind of it's own regardless of what the user wants it to do. The 'Windows Updates' sometimes produce strange things as well.
After returning here today I thought for a moment my time settings were messed up again, as in when I tested this yesterday...then I realized it was only the thread title. I do like that feature, but it threw me for a second here.