I am on f40 and regularly keeping up with updates.
$ uname -a
Linux e7.eyal.emu.id.au 6.12.11-100.fc40.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Jan 23 22:07:15 UTC 2025 x86_64 GNU/Linux
TB is 128.6.0esr (64-bit)
Short story: TB stays active with high %CPU in "top".
I start TB. Fetch mail (POP3). So far so good.
After a few times I do "Compact Folders". The messages go though a few folders and then say it is done.
However, the blue line at the bottom right stays solid blue and "top" shows about 60-70% CPU.
This is with the focus and the mouse are NOT on TB.
I later collect mail and that line goes wavy and stays so after mail is collected. Usually forever. I once left it overnight...
The only solution is to restart TB. Not nice.
How do I find what TB is actually doing?
BTW:
- I removed all the .msf files, which were then recreated when I did a global search.
- I vacuumed the sql databases for this profile.
I've observed a similar issue on fedora 41. Every once in a while TB would use a lot of cpu cycles. It would last a while and eventually go back to normal only to repeat. I was never able to figure out what it was doing. I just lived with it.
Yesterday I installed KDE 6.3 from the testing repository plus all other updates from the update repository. It may be too early but I have not noticed this behavior since. Time will tell.
BTW, if you want to say you keep up with updates, you might want to update for Fedora 41.