After asking Amazon customer service about this, this was what she reported:
' It seems that I have received a recent update that allows my Kindle to access "other towers in the area... My Kindle version is still 2.0.3 (327610024). C.S had me punch in 611 from the settings page (with wireless turned on) and under MODEM, my PRL Version is now 50413. He said my previous number there had started with a 4. So now I have an explanation as to why I have whispernet coverage now..." 'This is just one report, but it's worth a try, for those in the U.S. who have not had good luck with Whispernet. Below are ways to Share this post if you'd like others to see it.
-- The Send to Kindle button works well only on Firefox currently.
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