So last month my minecraft launcher (yes it is updated) worked.
It has stopped working now because i get a fatal error:

Bootstrap (v5)
Current time is Dec 26, 2013 11:46:54 AM
System.getProperty('os.name') == 'Windows 7'
System.getProperty('os.version') == '6.1'
System.getProperty('os.arch') == 'amd64'
System.getProperty('java.version') == '1.7.0_45'
System.getProperty('java.vendor') == 'Oracle Corporation'
System.getProperty('sun.arch.data.model') == '64'

Looking for update
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma
Got reply in: 572ms
No update found.
Reversing LZMA on C:\Users-\AppData\Roaming\.minecraft\launcher.pack.lzma to C:\Users-\AppData\Roaming\.minecraft\launcher.pack
Unpacking C:\Users-\AppData\Roaming\.minecraft\launcher.pack to C:\Users-\AppData\Roaming\.minecraft\launcher.jar
FATAL ERROR: java.lang.ExceptionInInitializerError
at com.sun.java.util.jar.pack.TLGlobals.<init>(Unknown Source)
at com.sun.java.util.jar.pack.UnpackerImpl.<init>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at java.util.jar.Pack200.newInstance(Unknown Source)
at java.util.jar.Pack200.newUnpacker(Unknown Source)
at net.minecraft.bootstrap.Bootstrap.unpack(Bootstrap.java:157)
at net.minecraft.bootstrap.Bootstrap.execute(Bootstrap.java:123)
at net.minecraft.bootstrap.Bootstrap.main(Bootstrap.java:381)
Caused by: java.lang.RuntimeException: intrinsic.properties cannot be loaded
at com.sun.java.util.jar.pack.PropMap.<clinit>(Unknown Source)
... 12 more

Please fix the error and restart.

Ive reinstalled java deleted my .minecraft folder added minecraft to the firewall and all of that didnt work.
(C:\Users- is just to censor the system name xd)