I confess I noticed it, too, though I was not bothered by it a great deal.
On a slight tangent - ever hear of a "Tom Swifty" - so called from the Tom Swift Jr. books by Victor Appleton II. This was a series of boys adventure books (no, not that kind of adventure) from Grosset & Dunlap who published Hardy Boys, Rick Brant, Nancy Drew etc.
Most often, an adverb used to describe the manner in which a character spoke was related to the content of the speech. For example - I can't believe the engine is still smoking like that, said Tom exhaustedly.