2009-11-13 04:12:26 UTC
I found the problem in the code. It only happens is the Week Starts with Monday feature is on AND the current month's first day is a Sunday. when trying to figure out where you have dragged the todo, the code does the calculation SUNDAY minus MONDAY, and in this one case gets a negative number and gets confused.
I have turned over a fix. I will upload a new build to my website where I put snapshot builds.
Mike