Spells: Impossible resists from NPCs

[Cid]

I apologize for not having specifics. I thought someone else would have mentioned it already.

Lately I have been having spells resisted that should never be resisted, and by mobs 20-25 levels below me.
I know for sure it was happening randomly but not often in Droga when I was using my necro Yawgmoth. I had Pyrocuror resisted a few times by common mobs, which has never occurred before and should not even be possible considering all necro fire dots have a -100 FR check.
I also had Deflux resisted at least once that I am sure of and that should definitely be impossible for a 30 something goblin when all necro lifetaps have the -200 MR check.

It did not happen a lot, or really often enough to trigger red flags in most people but I have killed those goblins tons of times and it was the first time I have ever had any resist check spell totally resisted.

I think my RL friend had it happen to him too in a different zone while playing his necro. Overall it may have happened on 1 out of 20 or so casts, but blowing 400 mana on a resisted dot or tap when you were relying on it could easily cause problems. Even still it was easily overlooked until Deflux was resisted. No npc has even resisted my lifetaps unless it was a belly caster or totally immune to magic.

If someone could look into it a lot of necromancers and probably other classes would appreciate the effort. I will try and get a pic and specific information if I see it happen again.