I'm curious too since I read DPreview almost every week. Maybe you're referring to the 1st gen DSLRs. Yes, these babies had some issues pero with the advancement of DSLR technology, these issues have been resolved. Maybe you're also referring to users who have moved from one system to another e.g. from Nikon to Canon. Complaints are normal there.

As for focus and shutter issues, even some film-based SLRs have these sorts of problems. It's how the user would compensate with his/her shot to negate the effects of these issues that matter. Sabi nga sa taas na post, it's the Indian that matters - not the pana.

Taking off from what OldBlue had posted, kahit sa film-based SLRs eh madalas din ang palit ng lens. Ako, I don't have a DSLR but I have two 35mm film SLRs: one that is fully manual (Nikon FM-10) and one that has automatic and manual functions (Canon 300V/Rebel). As you would see, I'm using two systems - Nikon and Canon pero wala naman akong problema so far. IMO, mas challenging ang film-based SLR photography using a manual camera kase naka-salalay sa knowlege mo about photography ang ganda ng shot mo. Of course, kahit anong galing sa tech stuff ang isang photobug pero hindi gaano marunong sa pag-gamit ng lighting (natural or otherwise) eh malamang pumalpak pa rin yung shot.