I make a distinction between trust and reliability. I can trust a company, even though they might not make the most reliable products.
Bugs/etc are a great way to lose my business, but not a way to lose my trust.
(what you're saying isn't lost on me, I just reserve "trust" for the situation I alluded to -- an important distinction given online privacy concerns/etc)
Bugs, bad upgrade paths, adding "features" while losing polish, etc. are all great ways to lose trust.