OMG I was just coming here to ask the same question and first thing is see is this thread, ive didnt have this with DS but my DD today has just done it, when I put her in for her nap she was making a real racket which is nothing new but when i went to check on her she was jumping up and down in her cot out of her sleeping bag [which zips downwards} pants off and nappy in the middle of the floor.
So its quite common i guess then, so will try the toweling pants over the top of the nappy tonight and see how that goes, and if all else false out with the tape tomorrow.
The joys of parenting, my DS was in a bed by now and never played up but DD is proving to be a real handful. So much for girls being easier
Keep the ideas coming ladies, ill be watching constantly for more ideas.
big-mummy