Filed under: CellphonesWe're still hunting down hard info on this one, but according to users on AT&T's official support forums, Samsung Blackjacks manufactured between November 2006 and February 2007 are the subject of a quiet recall due to a antenna issue. Apparently certain internal components are wearing oddly over time and causing the antenna to loosen and disengage, causing dropped calls and poor signal strength. A service advisory has apparently gone out to warranty centers, so if your Blackjack is acting a little flaky, now's the time to get on the horn.[Thanks, Douglas]