[wvguy]

very very very rare to have a bad batch of paint. Walmart does not make paint there are two companies that make there paint for them. Plus you should always "block" your paint. meaning if you purchase more than one gallon you mix them together in a larger bucket. It is possible however that the company has made a formula change. Although paint companies don't normally do this that often. I would consider if you like the paint try it again by returning your other paint or going to another store and trying a paint of like price and quality.