Have noticed in the last week or so prior to 2/12 that I am having serious issues with Thunderbird handling passwords. Not sure if it is corrupting the transmission or what the specific issues are but often takes multiple attempts to send an e-mail with errors stating login failed. Also finding that I will be retrieving a batch of mail and it will stop mid-stream, when I click "Get Messages" it will ask for the password again; or even with mail sitting idle...I may be reading e-mail on screen it suddenly pops a message stating that login failed. This is occurring on multiple accounts with different passwords. Not having similar issues on iPhone/iPad access to same accounts so does not appear to be a server issue. Restarting T'bird, rebooting PC, power cycling modem (total unplug from power) does not have any curative affect. Thought I saw some patches loaded first week of Feb. Could they be the issue? Anybody else experiencing similar issues?