I know you'll never believe this, but Blizzard has identified a bug in tracking one of the achievements. On the Achievements forum Tigole noted that zoning into a battleground will sometimes cause the counter to reset for "A Simple Re-Quest." For this achievement you must complete five dailies in a row. The known issue will be fixed in the upcoming patch 3.0.3 but Tigole recommends that if you are keen on earning this achievement in the meantime you may want to avoid entering the battlegrounds.
It will be easy to complete 5 dailies after the patch, so it's not a huge deal. I am concerned that Blizzard isn't getting to the heart of the bug, though. There seems to be more to it than battlegrounds. Though I haven't done any battlegrounds since the patch was released and have completed several dailies each day, I have not been awarded this achievement. I've been too busy doing dailies, heroics, and daily heroics.
This was followed by one of many apologies made by Blizzard in recent weeks. When asked the simple request for a 3.0.3 release date, Tigole gave the entirely unexpected answer: Soonish. We'll see it when it's ready.