Just tried out the atronach stone, and I can no longer use conjuration spells. Looked it up on the wiki and its a bug because the spells are casted at you, they get absorbed. This is ridiculous, I was planning on using alteration for my next character, a sneak mage that uses non-armor clothing (after 1.3, hoping some bugs will be fixed).
But I guess I will have to avoid this atronach perk and the standing stone. Pity since it's a nice effect against mages.
Is this a bug for everyone, or just some people? Anyone else had this?