From SRD:
Also from SRD:
So my question is this (soon to be the DM of a Drow-campaign):
Would this mean that
A) It is allways a standard action to lower spell resistance (and also forego a saving throw)
or
B) It is a free action, unless the spell is "harmless", then it is a standard action
or
C) Something different...
A "cure"-spell has SR: yes (harmless).... but a "Silence"-spell has SR: yes
Both can be relevant spells to have cast on you... but is lowering SR a standard action in both cases? And is your SR then "down" until your next action?
The same question goes for saves actually... is it also a standard action to forego a saving throw... (if it is, then my group have played it wrong all these years!)
Am a little perplexed...
... and need to know this for sure before we start, as I am sure it will come up 
Thanx!
The terms “object” and “harmless” mean the same thing for spell resistance as they do for saving throws. A creature with spell resistance must voluntarily lower the resistance (a standard action) in order to be affected by a spell noted as harmless. In such a case, you do not need to make the caster level check described above.
Also from SRD:
Voluntarily Giving up a Saving Throw: A creature can voluntarily forego a saving throw and willingly accept a spell’s result. Even a character with a special resistance to magic can suppress this quality.
So my question is this (soon to be the DM of a Drow-campaign):
Would this mean that
A) It is allways a standard action to lower spell resistance (and also forego a saving throw)
or
B) It is a free action, unless the spell is "harmless", then it is a standard action
or
C) Something different...

A "cure"-spell has SR: yes (harmless).... but a "Silence"-spell has SR: yes
Both can be relevant spells to have cast on you... but is lowering SR a standard action in both cases? And is your SR then "down" until your next action?
The same question goes for saves actually... is it also a standard action to forego a saving throw... (if it is, then my group have played it wrong all these years!)
Am a little perplexed...


Thanx!