Sticky notes have suddenly stopped working, just within the last 24 hours. Whenever I try to save a sticky note, I get a "server error" saying that my data has not been saved and that I should try again later. The only way to save stickies at this point is to create them from my bookmarks page in Diigo.
I have not tried with anything other than public notes in Diigo 3.1.6.5 and Diigolet so let's assume a service issue.
Postscript: I have sent an e-mail to Diigo support. Just in case.