On the region DRAGONMYST we have been regularly getting the following notice for more than a month. Resetting the region fixes if for a day or two, then it pops right back up again:
We are sorry, Linden Lab has discovered degraded performance on your connection to the region you are on. You will need to restart Second Life and log into a new region for the next 30 minutes to an hour. We apologize for the inconvenience.
When I get this notice my avatar is experiencing extremely limited functionality. As instructed, I am forced to relog to another region to correct the issue. Returning to DragonMyst does not correct the problem; the region has to be reset.