I always leave form autofill settings off. Yet in the last several Firefox versions, email addresses pop up as suggestions when I use login forms. I read the help articles. I triple-checked settings. Different login forms suggest various addresses (I have many), which is also odd. I read that this might be caused by extension conflicts. Is there a list? I wanted to know if this is a known issue before I try to troubleshoot it. Thank you. PS: I'm pretty unhappy that My Firefox Account exposes my email address username in this forum. I changed it in Firefox Accounts, but here it still shows. Since this forum is world readable and I can't delete my message, I'm going to delete my account. Please moderator delete this question for me.