Thanks for the info, kats! There's no general consensus for the GRE on the results page. Someone got in with very strong GRE scores (~160s), and another was accepted with average (~50th percentile) scores. Obviously, you want to get as high of a score as you can - do you think you can improve your scores, now that you have taken it and know exactly how it's laid out?
As well, if you do re-take it, do your new scores replace the old ones? Or do admission committes blend your scores together and take the average of the two? Some US schools do that, I believe.