I find that I do not get the error ["The DELE command did not succeed. Error marking a message as deleted. Mal server localhost responded: negative vibes (GMail)."] if I check "Leave messages on server" in Thunderbird. (Makes sense.)
Has anyone gotten 0.6.6b6 to work with "Leave messages on server" UNCHECKED? I also find that the extension does not properly download mail if the GMail Inbox has a conversation with more than one message in it. In one case, the extension downloaded only one of the messages. (In another case, it downloaded none of the messages in that conversation - but might have been because I had already tried to download that one once before I unchecked "Leave messages on server".)
