Ruh roh. Without claiming that there's some sort of high-speed conspiracy going on at Sprint (read: there's not), we'd like to point out that quite a few early adopters are claiming that their Hero refuses to hop on the carrier's EV-DO Rev. A network . We took a peek back at the company's press release for this very phone, and sure enough, the Rev. A experience is promised. We're guessing that a simple firmware update will be all it takes to remedy the issue (if there's truly an issue at