Please Help

Istart Minecraft and the Java Console say:

Java Plug-in 1.6.0_25
Verwendung der JRE-Version 1.6.0_25-b06 Java HotSpot(TM) Client VM
Home-Verzeichnis des Benutzers = C:\Users\*******
----------------------------------------------------
c: Konsole löschen
f: Objekte in Finalisierungswarteschlange finalisieren
g: Speicherbereinigung
h: Diese Hilfemeldung anzeigen
l: ClassLoader-Liste ausgeben
m: Speicherbelegung anzeigen
o: Protokollierung auslösen
q: Konsole ausblenden
r: Richtlinien-Konfiguration neu laden
s: System- und Bereitstellungseigenschaften ausgeben
t: Threadliste ausgeben
v: Thread-Stack ausgeben
x: ClassLoader-Cache löschen
0-5: Trace-Stufe auf <n> setzen
----------------------------------------------------


16 achievements
146 recipes
Setting user: maconboard, -1379083224834024826
WARNING: Found unknown Windows version: Windows 7
Attempting to use default windows plug-in.
Loading: net.java.games.input.DirectAndRawInputEnvironmentP lugin

Starting up SoundSystem...
Initializing LWJGL OpenAL
(The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
OpenAL initialized.

java.io.IOException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at ao.a(SourceFile:8)
at sm.b(SourceFile:54)
at gw.b(SourceFile:45)
at qp.l(SourceFile:66)
at qp.a(SourceFile:56)
at cs.a(SourceFile:95)
at net.minecraft.client.Minecraft.a(SourceFile:488)
at fh.a(SourceFile:101)
at cs.a(SourceFile:72)
at cs.e(SourceFile:120)
at cs.d(SourceFile:108)
at net.minecraft.client.Minecraft.j(SourceFile:1162)
at net.minecraft.client.Minecraft****n(SourceFile:694 )
at java.lang.Thread****n(Unknown Source)
java.io.IOException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at ao.a(SourceFile:8)
at sm.b(SourceFile:65)
at gw.b(SourceFile:45)
at qp.l(SourceFile:66)
at qp.a(SourceFile:56)
at cs.a(SourceFile:95)
at net.minecraft.client.Minecraft.a(SourceFile:488)
at fh.a(SourceFile:101)
at cs.a(SourceFile:72)
at cs.e(SourceFile:120)
at cs.d(SourceFile:108)
at net.minecraft.client.Minecraft.j(SourceFile:1162)
at net.minecraft.client.Minecraft****n(SourceFile:694 )
at java.lang.Thread****n(Unknown Source)
java.io.IOException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at ao.a(SourceFile:8)
at sm.b(SourceFile:54)
at gw.b(SourceFile:45)
at qp.l(SourceFile:66)
at qp.a(SourceFile:56)
at cs.a(SourceFile:95)
at net.minecraft.client.Minecraft.a(SourceFile:488)
at fh.a(SourceFile:101)
at cs.a(SourceFile:72)
at cs.e(SourceFile:120)
at cs.d(SourceFile:108)
at net.minecraft.client.Minecraft.j(SourceFile:1162)
at net.minecraft.client.Minecraft****n(SourceFile:694 )
at java.lang.Thread****n(Unknown Source)
java.io.IOException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at ao.a(SourceFile:8)
at sm.b(SourceFile:65)
at gw.b(SourceFile:45)
at qp.l(SourceFile:66)
at qp.a(SourceFile:56)
at cs.a(SourceFile:95)
at net.minecraft.client.Minecraft.a(SourceFile:488)
at fh.a(SourceFile:101)
at cs.a(SourceFile:72)
at cs.e(SourceFile:120)
at cs.d(SourceFile:108)
at net.minecraft.client.Minecraft.j(SourceFile:1162)
at net.minecraft.client.Minecraft****n(SourceFile:694 )
at java.lang.Thread****n(Unknown Source)



and after 2-10Minutes restart my Pc new or i have system Eror 0..... what i can make?

I hve Windows 7 ultimate 64 Bit