One more experiment: if I reboot the system and then load Evolution and give it no input, nor switch to the offending mailbox, it's left with one "Checking for new mail" in the status bar. (There were originally four; I have four mailboxes. But three of them disappeared.)
One more experiment: if I reboot the system and then load Evolution and give it no input, nor switch to the offending mailbox, it's left with one "Checking for new mail" in the status bar. (There were originally four; I have four mailboxes. But three of them disappeared.)