Somebodies elses references appeared among mine
Hello, sometimes I sign in to zotero on public computers, for example, in a library. Last time somebody used zotero before me in the library computer firefox, and I could see his/her references. I logged in with my name, and from now on I have two lists of references merged - mine, and the former ones, belonging to the other person. I also receive messages that my storage space is almost all used now. How can I get rid of not my references without deleting them for this other person on his/her account? Thank you.
Generally I'd strongly council against using Zotero on public computers - if once you forget to remove all your login information and the user after you is less considerate than you, they may delete the entire contents of your library in a way that's relatively hard to undo (in fact, impossible to undo without a local back-up).
If you do need Zotero on a public computer, use the webpage and the bookmarklet, but don't use the Zotero software. It's a recipe for disaster.