Halo 3: ODST Audio Logs Broken?

I have been through an audio log hunt 3 times, even crossed off each location on a map. Achievements list says I’m missing log 27 through 30. (I know 30 is revealed after 27 through 29.) In-game, I count 28 audio logs unlocked. The last audio log run I did, I found two more audio logs I missed. But, as I guessed, no achievements popped.

Are the audio logs broken too, or is it just me? This is really -Yoink!- me off.

Bump.

Guys let’s make this always on top! It’s REALLY FRUSTRATING that I’m at 599/600 SINCE MAY because this game is FULL of bugs. Especially after I completed EVERY Halo game achievement. It’s a shame the worst difficulty are the bugs!
No one gives an answer, I contacted Microsoft and they say It’s a game problem, I tried to contact 343 on twitter and by mail but they did not replied.
You can see in the spoiler that my last achievement in ODST is at 100% BUT is stuck and not unlocking since may as I said before. They are not updating the game, they don’t say they will ever update it… at least they could “force” unlock it or make the game ping the xbox servers again for all the achievement…