I used that circle of fire spell a time or two

Killed that big huge mean Ogre with the turning to stone and smacking it to pieces spell. That one reminded me of the freeze spell in DD.
My spell using abilities seem to be sporadic - sometimes I can get them to work and sometimes not - not sure why (and yes I let them recharge). I'm also trying to figure out how those combo spells go together and which ones to put with which. Haven't done anything with them yet.
I just hope I can get back into the game tonight -
And what's the new version?