Launcher 1.0.5 (through bootstrap 4) started on osx...
System.getProperty('os.name') == 'Mac OS X'
System.getProperty('os.version') == '10.8.3'
System.getProperty('os.arch') == 'x86_64'
System.getProperty('java.version') == '1.6.0_51'
System.getProperty('java.vendor') == 'Apple Inc.'
Going to log in with legacy stored username & password...
Loaded 1 profile(s); selected 'Me'
Trying to log in...
Logging in with access token
Couldn't go online
net.minecraft.launcher.authentication.exceptions.AuthenticationException: Cannot contact authentication server
	at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:133)
	at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logInWithToken(YggdrasilAuthenticationService.java:97)
	at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logIn(YggdrasilAuthenticationService.java:50)
	at net.minecraft.launcher.ui.sidebar.login.NotLoggedInForm$1.run(NotLoggedInForm.java:159)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
	at java.lang.Thread.run(Thread.java:680)
Caused by: java.net.SocketTimeoutException: Read timed out
	at java.net.SocketInputStream.socketRead0(Native Method)
	at java.net.SocketInputStream.read(SocketInputStream.java:129)
	at com.sun.net.ssl.internal.ssl.InputRecord.readFully(InputRecord.java:422)
	at com.sun.net.ssl.internal.ssl.InputRecord.read(InputRecord.java:460)
	at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:863)
	at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1188)
	at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1215)
	at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1199)
	at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:434)
	at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:166)
	at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1014)
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:230)
	at net.minecraft.launcher.Http.performPost(Http.java:61)
	at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:116)
	... 9 more

Going to play offline as 'ronroy123'...