Do Liches take 50% more damage from fire?

[frankthedm]

Glancing over the Lich template {skeleton too] on the d20srd.org web page, i noticed the "immunity to cold" was linked to cold immunity. Now that entry lists Cold Immunity automatically giving vulnerability to fire(+50%damage from fire). Now that is something i would have expected the MM entry to actually list, like they do for the frost worm.

http://www.d20srd.org/srd/monsters/lich.htm
Immunities (Ex)
Liches have immunity to cold, electricity, polymorph (though they can use polymorph effects on themselves), and mind-affecting attacks.

So am the only one wondering about this issue?

{Not that lich is that crippled by this since most casters get Protection from Energy.

 

[Mouseferatu]

That's an error. Being immune to cold doesn't automatically make one vulnerable to fire. It's the cold subtype that automatically comes with both immunity to cold and vulnerability to fire.

 

[hong]

What a silly rule. Just say that liches have cold resistance 10000000000.

 

[moritheil]

A more amusing question might be, "Does the energy immunity spell grant immunity to cold, or cold immunity? Because if it's the latter, it also grants vulnerability to fire . . . "