I have changed the buff stacking code to allow one DoT of each RESIST TYPE to stack (meaning one of: MR, FR, CR, PR, DR, and unresistable). This still seems strange to me since two DoTs which share some other non-damage component will not stack. But at the same time, it also seems strange to let all DoTs stack. I will think about this more.
as for the pally/cleric thing... are these the spell lines your talking about? (if not, link them):
http://lucy.allakhazam.com/spell.htm...09&source=Live
http://lucy.allakhazam.com/spell.htm...79&source=Live
because those spells have very specific rules to prevent them from stacking with eachother in the spell itself.