Duplicate/double in the list

e.g.
Blog number 1
Blog number 1
Previous blog entry
Previous blog entry
The oldest one
The oldest one

I have this problem when at first I thought it was Domain Access module that I'd installed. But it's not. I disabled and uninstalled the Domain module, and I thought it did solved it. But it didn't.

I went to Groups (OG) page where it list all the current groups. There, I see the problem again. But this time, only the group's creator will see their Group(s) doubled in the list.

e.g.
1. Test Group 1
2. Another group here
3. Group by you < by you
4. Group by you < by you
5. This group is not by you

If you never create any group before, even if you joined some groups, there'll be no issue there.

I'm using current release and even tried the latest dev version, no luck. Thanks.