I saw that there were a few Max Groups threads but this seems to differ enough for a different thread.
No matter how hard I try, I am unable to stop having the Alakol Homeowners Association group show up as part of "Your Groups", even though I quit that group (No offense Alakolics! I just don't live there any longer) and a few others as well.
I wanted to join a new group and when I got that pesky "You're already in max groups" message. I looked at my groups and saw a few I really didn't need to be in and quit. But they still showed up in "Your Groups". So thinking that like so many things this could be cured by a quick cache clear/refresh I gave it a try.
Nopes. Alas. And the weird thing is that it seems to actually let me quit the group(s), but they still show up in my Your Groups page, though if I wanted to rejoin those groups I can't now because I am still showing as over the max after leaving 3 groups. I was afraid to leave more groups in case I got down to 0 and was still not allowed to rejoin anything, though the most recent thread I could find mentions 8 as the max (unless invited?)
I would even cut 13 more of my current 20 if I knew that I'd be able to join something else again.
ETA: I would love to see something in the FAQ about how MAX groups actually work - how many one can join by clicking join - how many more one can join by invitation, etc., though I know that this info may not be available specifically because it is up in the air/being worked out during beta.