I may be wrong, but I'm pretty sure this was never a "recall" per se. There was a TSB issued that described modifying the sensor bracket that pablo645 is referring to. He is fortunate that it fixed his car. That TSB had been performed multiple times on mine yet the probelm always creeps back up after 3-4 months.
Pablo645 has an '08 though, and I think this problem is far more prevalent on '07 and earlier models.
I fully agree they should fix it on their dime as this is clearly a design flaw, and IMO this should have been a recall. I think the problem is that they can't do a recall because at the end of the day they don't actually know how to fix it! I just picked mine up again yesterday after having been in for the 8th or 9th time for this issue. They again replaced the sensor (3rd time) which I don't suspect will do anything in the long run to obviate the problem.