[EventCalendar] Ordering problem: categories

[Helene Zisook Speer]

I've discovered that if my posts are in both the events category and 
another category, a month's archive page doesn't order by event date.  
I got rid of all my other categories so that the only category is my 
events category, and now the ordering is perfect.

Does anybody have a workaround for this?  I would love to have 
categories of events.  I was thinking about using custom fields instead 
until ec3 supports multiple categories.

Any tips?

Thanks,

-Helene