Bad Running Ju-Ju?

Geez, what is it with me and running only events?!?!?  As I mentioned in a prior entry, every running event that I've entered has had something come along that has necessitated my dropping out.  For both the Ragnar Ultra, and the PF Chang's Marathon, it was a physical problem (my knee).  This time, no sooner do I announce a half Marathon, I get news (just today) that I have to run the swim studio solo that day and can't participate.  GEEZ!  Oh well, at least I didn't sign up for it yet and didn't lose any money!  Time to regroup and try to find another one that fits my schedule.