as long as the sub flooring was installed right, there shouldnt be a problem. i always use staples on the wood flooring and they are not going anywhere.

As long as the sub-floor is adequate and solid there is no reason to bother hitting the joists for hardwood strip flooring.

What does your floor manufacturer say about OSB?

The flooring is tradditional oak hardwood 2-1/2 inch strips. I do not know the manufacturer. Probably from local lumber dealer.

Nailing into the joists causes all kinds of problems, actually. You want the flooring nailed/stapled into the subfloor only.

First, installing wood flooring in a kitchen is fraught with potential problems. Water damage is only one possible gotcha. Dropping pots/pans making dents, hot liquid spills marring the finish, and stains from spills are also probabilities.

however, stapling wood to the sub floor is the preferred method of installation. Cleats(a type of large nail with a hook on the head) are also effective. The reason those methods hold well is the number of fasteners used. I set my staples about every 18" for the maple flooring I installed in our house. Not a squeak or peep in four years.

"First, installing wood flooring in a kitchen is fraught with potential problems. "

It works just fine, and had for hundreds of years.

The flex remaining in a typical floor covered in wood flooring is also far easier on the knees, hips, and back to stand on for any length of time.
Tile requires a far more solid floor, and large tile is about like standing on concrete all day.

You have to invest in soft mats to stand on.

Times are a-changin. Hardwood in a kitchen is no longer a no-no.

I love hardwood floors in kitchens.
I make a living repairing damages to them.

Dropping pots/pans making dents, hot liquid spills marring the finish, and stains from spills are also probabilities.

Isn't that what they call "patina"?!?

Whoops! I accidentally lost my mind and thought this was The Old House forum. ;-)

My parents have oak hardwood floors in their kitchen. Yes, there are some stains from all of those New England lobster pot dinners where dad was not so worried about where he dripped the water as he lifted the lobster out of the pot onto your plate. It helps that the house is > 100 years old, and the floors look quite at "home", as it were...

And I do love the fact that with hardwood floors, you can sand off all the "patina" and make it look brand spanking new if you want. I could not have done that with the old, cracked, 10-inch ceramic tiles as easily.

"Dropping pots/pans making dents, hot liquid spills marring the finish, and stains from spills are also probabilities."

Or dropping pots/pans and cracking tile or hot liquids staining the grout.

A correctly finished floor is not going to get a lot of staining as long as you wipe up the mess.

Nothing is harder to stand on for any length of time than tile (except maybe concrete).

Wood floors work fine in kitchens.