Either your date and time are set incorrectly--please
check--or:
Check the long and short date formats for your locale, via
control panel.
Go to Control Panel, Date, Time, Language, and Regional
options.
Choose Regional and Language options
On the Regional Options tab, click on Customize in the
upper right.
Click on the Date tab.
Change both the Short date format and the Long date
format to the topmost choices in each drop-down box.
Reset these to the top most choice in the drop-down
control.
This works for most, but not all languages and locales--
there have been a few folks for whom we haven't been able
to fix this issue.
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