i just noticed this today so i don't know if it's been fixed or if it's just a workaround, but when i click on "my profile" at the top of the screen, my activity stream comes up and defaults to "all", so it shows other people's replies as well as my own posts. but if i click on my name right next to where it says "all" all my posts come up and they're up to the minute recent.
i still can't use the "find latest posts" link because that goes back to jan. but i can still access them from my profile. it should work.