where has it gone?

Probably removed because it cluttered the top bar which was really cluttered before. Most people tend to use new posts. I know I at least used new posts out of habit and almost never used daily posts.

i loved the my threads...because i can see my threads and update them!

They were removed. I can probably readd them to the Misc section at some point. You can get your threads from the search function to. Daily posts is so similar to New posts.

but O-so much better