Stage 1 is tough Ariadne, mostly down to the short amount of time you have to answer each question rather than the questions themselves being hard. I would imagine this stage is testing your ability to work under stress and pressure, so prepare yourself for that! I found out quite quickly that I'd passed (I think the next day), but it was a year ago since I passed stage 0&1 so don't hold me to that.
I take it nobody waiting for a stage 3 invite has heard anything yet?