diff --git a/PBot/MessageHistory_SQLite.pm b/PBot/MessageHistory_SQLite.pm
index a39938f7..68eb01eb 100644
--- a/PBot/MessageHistory_SQLite.pm
+++ b/PBot/MessageHistory_SQLite.pm
@@ -51,8 +51,15 @@ sub sqlite_commit_interval_trigger {
 
 sub sqlite_debug_trigger {
     my ($self, $section, $item, $newvalue) = @_;
-    $self->{dbh}->trace($self->{dbh}->parse_trace_flags("SQL|$newvalue")) if defined $self->{dbh};
 
+    if ($newvalue) {
+        open $self->{trace_layer}, '>:via(PBot::SQLiteLoggerLayer)', PBot::SQLiteLogger->new(pbot => $self->{pbot});
+    } else {
+        close $self->{trace_layer} if $self->{trace_layer};
+        delete $self->{trace_layer};
+    }
+
+    $self->{dbh}->trace($self->{dbh}->parse_trace_flags("SQL|$newvalue")) if defined $self->{dbh};
 }
 
 sub begin {
@@ -67,8 +74,10 @@ sub begin {
         my $sqlite_debug = $self->{pbot}->{registry}->get_value('messagehistory', 'sqlite_debug');
         use PBot::SQLiteLoggerLayer;
         use PBot::SQLiteLogger;
-        open $self->{trace_layer}, '>:via(PBot::SQLiteLoggerLayer)', PBot::SQLiteLogger->new(pbot => $self->{pbot});
-        $self->{dbh}->trace($self->{dbh}->parse_trace_flags("SQL|$sqlite_debug"), $self->{trace_layer});
+        if ($sqlite_debug) {
+            open $self->{trace_layer}, '>:via(PBot::SQLiteLoggerLayer)', PBot::SQLiteLogger->new(pbot => $self->{pbot});
+            $self->{dbh}->trace($self->{dbh}->parse_trace_flags("SQL|$sqlite_debug"), $self->{trace_layer});
+        }
 
         $self->{dbh}->do(<<SQL);
 CREATE TABLE IF NOT EXISTS Hostmasks (
@@ -165,6 +174,7 @@ sub end {
     if (exists $self->{dbh} and defined $self->{dbh}) {
         $self->{dbh}->commit() if $self->{new_entries};
         $self->{dbh}->disconnect();
+        close $self->{trace_layer} if $self->{trace_layer};
         delete $self->{dbh};
     }
 }
diff --git a/PBot/PBot.pm b/PBot/PBot.pm
index 07d16502..fb2737fc 100644
--- a/PBot/PBot.pm
+++ b/PBot/PBot.pm
@@ -100,16 +100,16 @@ sub initialize {
         }
     }
 
-    # let modules register signal handlers
-    $self->{atexit} = PBot::Registerable->new(%conf, pbot => $self);
-    $self->register_signal_handlers;
-
     # make sure the data directory exists
     if (not -d $data_dir) {
         print STDERR "Data directory ($data_dir) does not exist; aborting...\n";
         exit;
     }
 
+    # let modules register signal handlers
+    $self->{atexit} = PBot::Registerable->new(%conf, pbot => $self);
+    $self->register_signal_handlers;
+
     # create logger
     $self->{logger} = PBot::Logger->new(pbot => $self, filename => "$data_dir/log/log", %conf);
 
@@ -411,9 +411,9 @@ sub cmd_sl {
 sub cmd_die {
     my ($self, $context) = @_;
     $self->{logger}->log("$context->{hostmask} made me exit.\n");
-    $self->atexit();
-    $self->{conn}->privmsg($context->{from}, "Good-bye.") if defined $context->{from};
+    $self->{conn}->privmsg($context->{from}, "Good-bye.") if $context->{from} ne 'stdin@pbot';
     $self->{conn}->quit("Departure requested.") if defined $self->{conn};
+    $self->atexit();
     exit 0;
 }
 
diff --git a/PBot/ProcessManager.pm b/PBot/ProcessManager.pm
index e717a18c..1263cff7 100644
--- a/PBot/ProcessManager.pm
+++ b/PBot/ProcessManager.pm
@@ -210,6 +210,7 @@ sub execute_process {
         # print $context to pipe
         my $json = encode_json $context;
         print $writer "$json\n";
+        close $writer;
 
         # end child
         exit 0;
@@ -225,6 +226,7 @@ sub execute_process {
 
 sub process_pipe_reader {
     my ($self, $pid, $buf) = @_;
+
     my $context = decode_json $buf or do {
         $self->{pbot}->{logger}->log("Failed to decode bad json: [$buf]\n");
         return;