The auto setup is mostly a ball park deal. I have never been impressed with the auto calibration on either of my recievers (they are 5 or more years old). I tend to set up my gear the old fashioned way. Takes a little more time, but I find I'm happier in the end. As mentioned by Quickly, knowing what speakers you have would help. Since you are talking about your surrounds, they are likely smaller speakers and may need to be crossed a little higher than you mains. If I can help it, I try not to cross any of my speakers above 100 Hz (usually below 80), but 110 is not much above that. If it sounds good to you, I say go with it. If not, try some different setting to see if you find one that works better for you.
Oops! You both posted while I was typing a response.
You don't have to worry about crossing your speakers too low. I doubt you will cross them anywhere near their lowest frequency response anyway. You'd have to play them at extreme volumes to damage them. If you are really worried about it, turn down the volume as soon as you start to hear distortion.