Saul Hansell at the New York Times offers up a good primer on what's happening with Clearwire, which hopes to offer Mobile WiMax service in twenty five markets by the end of the year. Hansell notes that funding for the network build continues to be a sticky issue, though he talks to sources who confirm last week's news that T-Mobile could emerge as a funding partner in exchange for spectrum access. The Times also links back to our story from a few weeks ago highlighting how customers in a lot of the early Clearwire launch markets aren't particularly impressed with speed or latency.