IPhoto Bug - Every time try to change date, date moves back 100 years

Question

You will like this bug. Somehow an incorrect date was entered on the videos in iPhoto. Now, we try to enter a correct date of 2/1/2011 using iPhoto->Photos->Adjust Date Time and the dates just keep going back approximately 100 years. Currently, the date shows June 3, 1221!
We can't set the date on our videos.
I just tried again, and now the date shows May 16th, 1153.
Bummer, huh?

Answer 1

I friend of mine had the same problem and ask me for a solution. I conclude that when you ask to adjust date and time, iPhoto calculates the number of seconds that each picture has to be adjusted with. That number of seconds is stored in an 32bits signed integer variable, which means that the maximum numbers of seconds we can store is 2,147,483,647, which corresponds to 68 years, 35 days, 3 hours, 14 minutes and 7 seconds. If the adjustment you are trying to do is smaller than that, it will work, if it's bigger the result would be uncertain. There is an easy solution to that problem, but is Apple that has to implement it by changing the 32bits variable that stores those seconds to a 64 bits one.
Therec.