See, defects are funny things. They tend to appear once the product is in the wild

I know it may sound facetious but to repeat myself, no piece of complex technology is ever released free of them. It is a question of what code/feature coverage can be done in the time/money/miscellaneous resources available. None of those are infinite. And having been on the other side of this, I can tell you that signing off on something knowing that it was impossible to catch everything and hoping that the test plans and coverage you assembled caught the critical issues with a reasonable degree of confidence is, well... harrowing. Exciting but harrowing

Yes, I many times have been in the situation where I had to make a judgment call on what to test and what to skip on a very tight schedule. Sometimes, that gamble would backfire.

In any event, being on the bleeding edge of a new platform (or semi-new) can be exciting but certainly is not for everyone! I can certainly understand if some people would rather wait out the first release of Maemo 5. For most people, I'd say that step 5 is the right one, not step 4 (at least if I understand correctly what Nokia's announced plans are).