The Nikon D3 was the only highly computerized device I have ever owned that NEVER malfunctioned, locked up, or annoyed me in any way.
It did have one flaw...the fogging of the rear LCD cover glass. One of my 2 D3's fogged up while still under warranty, so I had Nikon fix it. But then, that D3 re-fogged itself and the other unit also fogged up.
I did this repair on both of my D3's. At the time I bought the exact replacement Nikon die-cut adhesive foams and replacement glass LCD covers from a local repair shop that also sold parts....a situation that could not happen today.