Comment 50 for bug 927515

I also experience a high CPU usage (generally around 70%, measured by top), with:

- Thunderbir 17.0.7
- Ubuntu 13.04 32bit
on a ThinkPad T60 with Intel T2400 @ 1.83GHz × 2

I have several e-mail accounts on TB (total of 5, being 3 imap gmail/yahoo and 2 private imap/pop).

I don't know if this is related to this bug.

BUT I've notice something very simple that sort of "solves" the issue for me, apparently having to do to what is selected in the lateral folder pane:

1. IF I leave the INBOX of any account selected (or actually any other FOLDER), even though activity manager could show no recent activity for, say, the last 10 minutes, I see a turning wheel on TB's e-mail tab and I notice TB takes about 70% of CPU (measured by top). See attached screenshot.

2. On the other hand, IF I select no INBOX/FOLDER but simply click on one account (lateral pane - see attached screenshot), TB CPU usage drops to <2%, coming up eventually to 20-30% of CPU for a few seconds, every 40 seconds or so, I believe when checking for new messages.

I'm only a user with no technical knowledge, but IMHO, it seems that TB actually keeps constantly updating the messages/account if and INBOX/internal FOLDER is selected, even when no activity is registered by "activity manager". Could it be?