I have leveled a DK to 15 recently, as well as leveling a few other characters, and have yet to see a poison/disease save get raised. Are they broken or just really, really rare?

It's hard to say - I looked over the code and some player files and they all looked fine. I put in a minor fix today to a possible cause to the problem, so I'll need you to test it and see if it fixed the problem.

Whatever you did worked. My saves are going up! Thank you.

What was causing the problem, dom?

When your poison save is about to go up, we check if you're immune to poison or disease. If you are, you'll never need for a save to go up. You're immune! A serendipitous ! found its way into the code, so it didn't work properly.

SO I am guessing that the problems with saves are now fixed? Only my spell saves had been going up but now my poison and breaths have both raise for the first time in the last day.