From wowwiki:
Seal of Light
Quote:
# For Seal of Light: The proc rate for the healing done by Seal of Light seems to be based on an average number of procs per minute, rather than a fixed proc rate per strike. Therefore, while under Seal of Light, each attack the paladin makes with a slow weapon has a greater chance for the healing effect to proc than if the paladin were attacking with a fast weapon. The average amount of healing per minute from the Seal of Light buff is therefore independent of weapon speed.
# For Judgement of Light: The proc rate appears to be a fixed chance of around 50% per strike, regardless of the attacker's weapon speed. Therefore, attacking a target that has the Judgement of Light debuff in place with a slow weapon will generate less healing per minute than attacking with a fast weapon.
Seal of Wisdom
There is no such information on the wiki for this Seal, but my guess is that it works the same way? I don't know for sure so if anyone has more info to add I'd be interested as well.
As for the amount healed or mana gained, I believe that it is the same amount on proc whether you have a fast caster weapon or a big, slow 2H weapon. Again, if anyone knows otherwise, please correct me :)
Edited, Sep 6th 2008 4:03pm by Maulgak