Purchased two pairs in black & white.  Been wearing the black pair to work (in an office) for 3 weeks and the rubber soles are separating from the heels on both left & right shoes. I've worn New Balance Shoes exclusively for 20 years and NEVER had any problems like this.  What happened to the quality?  I read some bad reviews on this shoe but didn't pay attention... couldn't imagine it could be true.  Will be returning both pairs.