Since about yesterday, my enigmail 2:1.9.9-2 (on debian sid) seems to
automatically update keys by launching commands like this:

/usr/bin/gpg --charset utf-8 --display-charset utf-8
--no-auto-check-trustdb --batch --no-tty --status-fd 2 --keyserver
hkps://pgp.mit.edu:443 --recv-keys 49B484E2FB331A4A

49B484E2FB331A4A is a key in my database. The process' parent is
thunderbird.

These gpg instances use 100% of my CPU (well, 1 core) until I kill them
(I tested for 7+ minutes). Attaching strace shows a brain-dead behavior,
apparently trying to acquire a lock in a busyloop (wrong in itself,
should be blocking) with a crazy high offset:

fcntl(8, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET,
l_start=1073741824, l_len=1}) = -1 EACCES (Permission denied)
fcntl(8, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET,
l_start=1073741824, l_len=1}) = -1 EACCES (Permission denied)
fcntl(8, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET,
l_start=1073741824, l_len=1}) = -1 EACCES (Permission denied)

$ ls -lh /proc/6643/fd/8
lr-x------ 1 phihag phihag 64 Mar 30 10:40 /proc/6643/fd/8 ->
/home/phihag/.gnupg/tofu.db
$ ls -l /home/phihag/.gnupg/tofu.db
-rw-r--r-- 1 phihag phihag 49152 Mar 30 03:35 /home/phihag/.gnupg/tofu.db

To me, this looks like a bug in gpg (not enigmail). Nevertheless, I
never wanted enigmail to automatically synchronize keys, especially when
I'm connected via a metered and small-bandwidth connection.

So how do I disable the automatic key synchronization in enigmail? Even
with advanced preferences enabled, I cannot find any relevant tab,
letalone relevant option in the preferences.



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