Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Can anyone else chime in? Played with a store 3gs and it would drop down to 2 bars occasionally. Mine was at three, sometimes two and only once at one bar. Never seemed to affect connectivity. Because of google results this seems like a widespread issue so I'm going to hold off on replacing mine now, mostly because I've had replacements in the past with 2g and 3g that were inferior.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.