My Thunderbird (newest version) eats nearly all my system resources (45-85% of CPU).
Computer's cooler runs loudly and using any application (including Thunderbird itself) is simply impossible because mail messages are being typedletter-by-letter with 2-3 seconds delay between each letter.
I have quite old but still usable hardware -- Asus notebook with i5 quad and 8 GB of RAM.
What can I do (what to check, what tests to perform) to try to find source of this problem?
I can't believe that this is hardware-related problem, because 50+ other applications works like a charm on the very same computer. I can't (now) believe this is Thunderbird-related problem, since it seems it is working awfully slow on my computer only.
Yes, I did all the magic with creating new profile and/or reinstalling Thunderbird itself.
