You guys got me all paranoid about my 8300...!!
Just kidding!
I have been pushing on each square millimeter, squeezing the sides, and trying to find a loose or creaky part...and have found none. Mine is even of Mexican lineage...and was one of the first sold through AT&T Business Services...and if any should have quality problems, mine should , being "first batch". But, mine is solid as a rock...
Matter of fact, this device is probably one of the best built phones I have ever used!! I am very impressed...