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[14:42:49] [Client thread/INFO]: Setting user: kn_minecraft
[14:42:49] [Client thread/INFO]: (Session ID is token:a54950c4585bf8813366a4291180e1f5:53e1375d209aea0c0f354384597be548)
[14:42:54] [Client thread/INFO]: LWJGL Version: 2.9.1
[14:42:55] [Client thread/INFO]: Reloading ResourceManager: Default
[14:42:56] [Sound Library Loader/INFO]: Starting up SoundSystem...
[14:42:56] [Client thread/WARN]: File minecraft:sounds/mob/ghast/fireball.ogg does not exist, cannot add it to event minecraft:item.fireCharge.use
[14:42:56] [Thread-6/INFO]: Initializing LWJGL OpenAL
[14:42:56] [Thread-6/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[14:42:59] [Thread-6/INFO]: OpenAL initialized.
[14:42:59] [Sound Library Loader/INFO]: Sound engine started
[14:43:00] [Client thread/INFO]: Created: 512x512 textures-atlas
[14:43:24] [Server thread/INFO]: Starting integrated minecraft server version 1.8
[14:43:24] [Server thread/INFO]: Generating keypair
[14:43:24] [Server thread/INFO]: Preparing start region for level 0
[14:43:25] [Server thread/INFO]: Preparing spawn area: 20%
[14:43:26] [Server thread/INFO]: Preparing spawn area: 59%
[14:43:27] [Server thread/INFO]: Preparing spawn area: 95%
[14:43:28] [Server thread/INFO]: Changing view distance to 16, from 10
[14:43:28] [Server thread/INFO]: kn_minecraft[local:E:56f90d73] logged in with entity id 385 at (117.32345472703228, 92.36426190929876, 290.21599335167775)
[14:43:28] [Server thread/INFO]: kn_minecraft joined the game
[14:43:33] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4932ms behind, skipping 98 tick(s)
[14:43:43] [pool-2-thread-1/WARN]: Couldn't look up profile properties for [email protected][id=53e1375d-209a-ea0c-0f35-4384597be548,name=kn_minecraft,properties={},legacy=false]
com.mojang.authlib.exceptions.AuthenticationUnavailableException: Cannot contact authentication server
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:71) ~[authlib-1.5.17.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillGameProfile(YggdrasilMinecraftSessionService.java:158) [authlib-1.5.17.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService$1.load(YggdrasilMinecraftSessionService.java:53) [authlib-1.5.17.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService$1.load(YggdrasilMinecraftSessionService.java:50) [authlib-1.5.17.jar:?]
at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524) [guava-17.0.jar:?]
at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317) [guava-17.0.jar:?]
at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280) [guava-17.0.jar:?]
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195) [guava-17.0.jar:?]
at com.google.common.cache.LocalCache.get(LocalCache.java:3934) [guava-17.0.jar:?]
at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938) [guava-17.0.jar:?]
at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821) [guava-17.0.jar:?]
at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4827) [guava-17.0.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillProfileProperties(YggdrasilMinecraftSessionService.java:148) [authlib-1.5.17.jar:?]
at cvz.run(SourceFile:105) [1.8.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_71]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_71]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_71]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_71]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_71]
Caused by: java.net.UnknownHostException: sessionserver.mojang.com
at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[?:1.7.0_71]
at java.net.PlainSocketImpl.connect(Unknown Source) ~[?:1.7.0_71]
at java.net.SocksSocketImpl.connect(Unknown Source) ~[?:1.7.0_71]
at java.net.Socket.connect(Unknown Source) ~[?:1.7.0_71]
at sun.security.ssl.SSLSocketImpl.connect(Unknown Source) ~[?:1.7.0_71]
at sun.net.NetworkClient.doConnect(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.http.HttpClient.openServer(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.protocol.https.HttpsClient.New(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.7.0_71]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.7.0_71]
at com.mojang.authlib.HttpAuthenticationService.performGetRequest(HttpAuthenticationService.java:126) ~[authlib-1.5.17.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:54) ~[authlib-1.5.17.jar:?]
... 18 more
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x2af04960, pid=4960, tid=5092
#
# JRE version: Java(TM) SE Runtime Environment (7.0_71-b14) (build 1.7.0_71-b14)
# Java VM: Java HotSpot(TM) Client VM (24.71-b01 mixed mode windows-x86 )
# Problematic frame:
# C [ig4icd32.dll+0x44960]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\Users\kavi\AppData\Roaming\.minecraft\hs_err_pid4960.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
AL lib: (EE) alc_cleanup: 1 device not closed

--these are what my logs say plz plz plz help ;( !!

i would appreciate ur support!!

thank you!

As you can see it has the [14:43:33] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4932ms behind, skipping 98 tick(s) this message means you have little amount of RAM to run you game or you have to much IN-GAME worlds or servers,

So here are some recommendations to speeding up your minecraft

1. remove the worlds you DON'T need and that you don't want

2. remove the servers that you DON'T need or DON'T play on anymore

3. look up videos on youtube about how to add more IN-GAME RAM to your minecraft client

you can do all these steps but it is option-able if your lazy like me Hope I helped!

No, it means the server software is running slow, usually due to the system hardware not being able to handle the demand. Having other world files or servers on the list make zero difference, they aren't actively being loaded.

From the looks of it, the OP is running 32bit java, as well as the log saying it couldn't contact the authentication server.

Thank you solo much for your support but

The problem is not fixed!!
Can sb give me a good solution maybe optifine I heard but I kno nothing of these things!

Plz plz plz help!! Happens evrytime I play minecraft

I can play for about 1-2 minutes then it crashes!!!

Optifine is worthless only ADDS more lag