unfortunately not Terry.
I tried example 1 in both NT6 and NT5, i Chrome and FF, but it appeared to be ok in both.
I'm running Chrome 15.0.874.121 and FF 8.0 (on the "release channel") both of which claim to be up-to-date.
Incidentally I'm using Firebug 1.8.4 in this Firefox as well,
alas I didn't manage to duplicate the effect you're seeing.
Cheers
Bruce