Baseline has a piece on how WalMart is rethinking its RFID strategy. "Faltering" is a bit strong, based on the article's actual content, but I'll bet the author didn't write the headline.

Looks like WalMart's trying to find ways of using the technology effectively even though it's not fully rolled out – fully enabling a single supply chain, for example, rather than counting on having all the distribution centers online and all the products tagged any time soon.

Quote:

Wal-Mart's change of plan demonstrates the need for retailers and suppliers alike to tread carefully with RFID. As retailers such as Best Buy have observed, widespread adoption is still years, not months, away. At the same time, some of the greatest benefits may not be in applications first thought to be ripe for the technology, such as automating distribution centers. Instead, retailers are finding early gains closer to the sales floor, where they are using RFID to track consumer buying patterns and ensure products are on shelves in time for promotions.

Link