This used to happen all the time with my sofa! It's a pretty lightweight piece, so it would shift pretty far too. I'd definitely recommend getting rubber furniture "feet" to stick to the legs of your couch / other furniture with legs. They work really well, but eventually if dust on the floor gets stuck in the rubber, they won't be quite as "grippy" -- so I have to clean mine occasionally when I do a deep clean of the house :) Good luck!

what are furniture "feet"

There are a few examples here (I just googled "rubber furniture feet") and they are grippy pads that go on the bottom of your sofa legs, so that they are more grippy: http://www.amazon.com/s?ie=UTF8&page=1&rh=n%3A2380874011%2Cp_n_feature_keywords_browse-bin%3A4755457011

Can I use double sided carpet type to keep the corner part of our sectional from sliding on the wood floor?

@miss5366 - No...double sided carpet tape is not an option. It has enough "grip" to rip off the finish (and maybe even some wood) off of your floor. Fixing a floor's finish can be expensive and time consuming. Your best option is to find something like what Noz lists (rubber furniture feet). Any form of tape will ruin the finish of any floor out there (even concrete can be damaged by some forms of tape...especially double sided carpet tape).

HI -- I just solved this problem with my Mothers bed sliding on new laminate flooring in her new seniors living lodge . I got these round makeup compact size sponges from the dollar store and they work great . It only cost me $2 for four sponges . How great is that !!!

Make-up sponges! Awesome! I will have to pick some up and test to see if they will damage hardwood finishes! Thanks for the info/idea!

This is from Dec of 2012 in case anyone is interested.

HI -- Yes ,saw that but the info might help someone else anyway , right ?