Hi,
I' having the same issue as the reporter on all of the machines I am
responsible for. Also none of the tips in
https://wiki.debian.org/Thunderbird#Bug_Reporting_.2F_Issues are helping
on any of those machines.
Perhaps I have some additional to be able to identify how to solve this:
I am using only IMAP Accounts. On one PC I tried to setup a new profile.
Right after just having configured the first account, the behavior was
identical to my existing profile, TB was unresponsive most of the time.
In the General-Settings I changed the format to "File per message
(maildir)", removed the account and recreated it.
Though the usage ("top") also seems very high, TB "feels" responsive.
What I have not done so far:
* Added my other accounts
* Added any Address book (I'm using multiple CardDAV books)
* Added any Calendar (I'm using multiple CalDAV-Calendars and one
readonly ICS file)
Therefore I see a chance that converting all mailboxes to maildir format
might solve this issue.
As a first step, it would be good if someone else could either falsify
my assumption or confirm this is also helping in a second scenario.
If this can be confirmed, the next step would be to "migrate" accounts
from mbox to maildir format.
The main problem I see is, that I don't know a way to convert an
existing account in TB from mbox to maildir format. I read something
about an experimental setting (mail.store_conversion_enabled) but I have
no experience with this (yet?).
Regards
Armin
P.S.: Having to convert all profiles on all machines manually is not
acceptable, I don't even want to estimate how long this might take.
