The following has been happening on my groups home page (by selecting "my groups" in the drop-down menu in the bar at the top of the page):

1) I have updated a group by changing its description, but the old description is still displayed here.

2) One of my groups says "no public posts in this group", even though all the posts in the group are public.

3) My latest group is not shown (when I click "show all", it is not on the list).

These are all groups that I have started. They are shown correctly when I click on a group from my profile page, or when I scroll down to "my groups" on my profile page and select "see all". When I use the drop-down menu in the bar at the top of the page, though, it does a few funny things.
Anyone know what I can do?