CCL: G03 and negative frequencies

 Hi --
I just had a job finish and it ended up giving me all negative frequencies. My job is with PM3.
 I have several questions:
1) Is there a way to tell if a job will give negative frequencies before it completes? This job took 5 full days, so it would be nice to know a little more beforehand that a job will yield negative frequencies
2) I know that negative frequencies usually means that I'm not at a minimum but rather am at a saddle point. But I optimized first using PM3 and then did a freq calculation. Are there other things I can do to ensure that I am at a true minimum and not a saddle point before proceeding?
 3) Other suggestions?