DNS changes aren't instant-on creatures. When you do anything besides a simple name addition it can take some time before the changes are reflected by your local system.
It's likely you (or anyone for that matter) first tried connecting to blah.com before they had all records active. Your DNS server or local stack cached the miss, and it took awhile to expire. Many large nets, especially those used by large end-user ISPs like AOL, crank their timers way up to reduce DNS overhead. It doesn't normally cause problems beyond the first couple days when you're making lots of basic decisions.
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There are a vast number of people who are uninformed and heavily propagandized, but fundamentally decent. The propaganda that inundates them is effective when unchallenged, but much of it goes only skin deep. If they can be brought to raise questions and apply their decent instincts and basic intelligence, many people quickly escape the confines of the doctrinal system and are willing to do something to help others who are really suffering and oppressed." -Manufacturing Consent: Noam Chomsky and the Media, p. 195
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