Did you know there are 53 weeks in a calendar year? Yep, according to Windows Mobile, that is the case for certain years. This is one of the oldest bugs and has been around since the Windows CE days. So, if you use week numbers for project planning, don’t use the Windows Mobile week numbers as your definitive guide.
You might check your facts on this. ISO 8601 specifies that weeks are numbered starting with week 1, which is “the week containing the first Thursday in January”.
Looking at an ISO Week Date calculator and punching in 31 December 2004, you can see that 2004 had a W53 also. As well as 31 December 2009 (in your example).
http://personal.ecu.edu/mccartyr/isowdcal.html
And there’s references that discuss the 53 week phenomenon also, or at least acknowledge the possibility.
http://en.wikipedia.org/wiki/ISO_8601
http://www.cl.cam.ac.uk/~mgk25/iso-time.html
I’m not sure you’ve got a bug here.
I am not suprised. With the recently announced Excel math bugs in Office 2007 and the old Windows Calculator bug it is a wonder that any business can trust the results of the answer the Microsoft product is giving them or how much this bug has cost companies that may not even know that they are bleeding money even though the spreadsheet says the are making money.
BTW. Todd, iPod Touch came and it is great. Excellent screen. Web portals to web 2.0 apps make the missing apps like weather easy to deal with!