@A60 I don't think I made a separate topic for it - but I have commented several times about my 60% CPU usage with mail. Someone else mentioned they get it too.
I have one question: are you using IMAP or POP3 for you mail account(s)? I have had no problems at all on laptops where I use IMAP, but I get the very high CPU usage on an old desktop where POP3 is used for mail backup.