Is anyone having this problem? Thunderbird worked OK at first and over time started giving error "Sending of message failed. Please verify that your Mail & Newsgroups account settings are correct and try again." finally degrading where the new 3.5 version won't even send mail. I don't even have a cursor in the body to write a message.
I can restart in XP Pro 32bit and both the 2.0 and new 3.5 ver works OK. I have the same profile for 32 located on Drive c: & 64 located on Drive D: with common mail folder being on drive F: I installed 2.0 version on Win7 64 and it will send, reply, & forward mail in the text mode, sometime it will not send a reply or forward mail unless I remove the original message in HTML mode.