diff --git a/src/Client.js b/src/Client.js
index a6916bd1c..722e3bdc7 100644
--- a/src/Client.js
+++ b/src/Client.js
@@ -138,7 +138,7 @@ export default class Client extends EventEmitter {
       error?: Object,
     |} = rawData;
 
-    console.log(data, 'message:receive');
+    console.debug(data, 'message:receive');
 
     const {id, method} = data;
 
@@ -240,7 +240,7 @@ export default class Client extends EventEmitter {
         params,
       };
 
-      console.log(data, 'message:call');
+      console.debug(data, 'message:call');
       this.startTimingRequestResponse({method, id, params});
       this.connection.fireAndForget({data: JSON.stringify(data)});
     });
@@ -273,7 +273,7 @@ export default class Client extends EventEmitter {
       method,
       params,
     };
-    console.log(data, 'message:send');
+    console.debug(data, 'message:send');
     this.connection.fireAndForget({data: JSON.stringify(data)});
   }
 
diff --git a/src/chrome/WelcomeScreen.js b/src/chrome/WelcomeScreen.js
index ff8393e14..699b8a3a9 100644
--- a/src/chrome/WelcomeScreen.js
+++ b/src/chrome/WelcomeScreen.js
@@ -103,10 +103,12 @@ export default class WelcomeScreen extends PureComponent<Props, State> {
     isMounted: false,
   };
 
+  timer: ?TimeoutID;
+
   componentDidMount() {
     // waiting sometime before showing the welcome screen to allow Flipper to
     // connect to devices, if there are any
-    setTimeout(
+    this.timer = setTimeout(
       () =>
         this.setState({
           isMounted: true,
@@ -115,6 +117,12 @@ export default class WelcomeScreen extends PureComponent<Props, State> {
     );
   }
 
+  componentWillUnmount() {
+    if (this.timer) {
+      clearTimeout(this.timer);
+    }
+  }
+
   render() {
     return (
       <Container>
diff --git a/src/device-plugins/logs/index.js b/src/device-plugins/logs/index.js
index f7f06bf2b..a0e890e21 100644
--- a/src/device-plugins/logs/index.js
+++ b/src/device-plugins/logs/index.js
@@ -244,6 +244,9 @@ export default class LogTable extends SonarDevicePlugin<LogsState> {
   static icon = 'arrow-right';
   static keyboardActions = ['clear', 'goToBottom', 'createPaste'];
 
+  initTimer: ?TimeoutID;
+  batchTimer: ?TimeoutID;
+
   onKeyboardAction = (action: string) => {
     if (action === 'clear') {
       this.clearLogs();
@@ -384,7 +387,7 @@ export default class LogTable extends SonarDevicePlugin<LogsState> {
       if (!queued) {
         queued = true;
 
-        setTimeout(() => {
+        this.batchTimer = setTimeout(() => {
           const thisBatch = batch;
           batch = [];
           queued = false;
@@ -421,13 +424,22 @@ export default class LogTable extends SonarDevicePlugin<LogsState> {
       }
     });
 
-    setTimeout(() => {
+    this.initTimer = setTimeout(() => {
       this.setState({
         initialising: false,
       });
     }, 2000);
   }
 
+  componentWillUnmount() {
+    if (this.initTimer) {
+      clearTimeout(this.initTimer);
+    }
+    if (this.batchTimer) {
+      clearTimeout(this.batchTimer);
+    }
+  }
+
   addRowIfNeeded(
     rows: Array<TableBodyRow>,
     row: TableBodyRow,
diff --git a/src/server.js b/src/server.js
index b244fcaf9..4fb96ad89 100644
--- a/src/server.js
+++ b/src/server.js
@@ -87,7 +87,7 @@ export default class Server extends EventEmitter {
           console.error(`Error opening server on port ${port}`, 'server');
         })
         .on('listening', () => {
-          console.warn(
+          console.debug(
             `${
               sslConfig ? 'Secure' : 'Certificate'
             } server started on port ${port}`,
@@ -121,7 +121,7 @@ export default class Server extends EventEmitter {
     conn.connectionStatus().subscribe({
       onNext(payload) {
         if (payload.kind == 'ERROR' || payload.kind == 'CLOSED') {
-          console.warn(`Device disconnected ${client.id}`, 'connection');
+          console.debug(`Device disconnected ${client.id}`, 'connection');
           server.removeConnection(client.id);
         }
       },
@@ -175,7 +175,7 @@ export default class Server extends EventEmitter {
           destination: string,
         |} = rawData;
         if (json.method === 'signCertificate') {
-          console.warn('CSR received from device', 'server');
+          console.debug('CSR received from device', 'server');
           const {csr, destination} = json;
           return new Single(subscriber => {
             subscriber.onSubscribe();
@@ -217,7 +217,7 @@ export default class Server extends EventEmitter {
           destination: string,
         |} = rawData;
         if (json.method === 'signCertificate') {
-          console.warn('CSR received from device', 'server');
+          console.debug('CSR received from device', 'server');
           const {csr, destination} = json;
           this.certificateProvider
             .processCertificateSigningRequest(csr, clientData.os, destination)
@@ -242,7 +242,7 @@ export default class Server extends EventEmitter {
     invariant(query, 'expected query');
 
     const id = `${query.app}-${query.os}-${query.device}`;
-    console.warn(`Device connected: ${id}`, 'connection');
+    console.debug(`Device connected: ${id}`, 'connection');
 
     const client = new Client(id, query, conn, this.logger);
 
@@ -252,7 +252,7 @@ export default class Server extends EventEmitter {
     };
 
     client.init().then(() => {
-      console.log(
+      console.debug(
         `Device client initialised: ${id}. Supported plugins: ${client.plugins.join(
           ', ',
         )}`,
diff --git a/src/utils/CertificateProvider.js b/src/utils/CertificateProvider.js
index 355015c74..83a7d4a8b 100644
--- a/src/utils/CertificateProvider.js
+++ b/src/utils/CertificateProvider.js
@@ -125,7 +125,7 @@ export default class CertificateProvider {
   }
 
   generateClientCertificate(csr: string): Promise<string> {
-    console.warn('Creating new client cert', logTag);
+    console.debug('Creating new client cert', logTag);
     const csrFile = this.writeToTempFile(csr);
     // Create a certificate for the client, using the details in the CSR.
     return openssl('x509', {
@@ -258,7 +258,7 @@ export default class CertificateProvider {
     filename: string,
     contents: string,
   ): Promise<void> {
-    console.warn(`Deploying ${filename} to ${deviceId}:${app}`, logTag);
+    console.debug(`Deploying ${filename} to ${deviceId}:${app}`, logTag);
     return this.executeCommandOnAndroid(
       deviceId,
       app,
diff --git a/static/index.js b/static/index.js
index d99157783..97f0e2287 100644
--- a/static/index.js
+++ b/static/index.js
@@ -16,6 +16,9 @@ const {exec} = require('child_process');
 const compilePlugins = require('./compilePlugins.js');
 const os = require('os');
 
+// disable electron security warnings: https://github.com/electron/electron/blob/master/docs/tutorial/security.md#security-native-capabilities-and-your-responsibility
+process.env.ELECTRON_DISABLE_SECURITY_WARNINGS = true;
+
 if (!process.env.ANDROID_HOME) {
   process.env.ANDROID_HOME = '/opt/android_sdk';
 }