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my minecraft suddenly stopped working... i have no idea why... can anyone help me

my error report:

--- BEGIN ERROR REPORT b52a38fa --------
Generated 11/4/12 8:25 PM

- Minecraft Version: 1.4.2
- Operating System: Linux (amd64) version 3.2.0-32-generic
- Java Version: 1.7.0_06, Oracle Corporation
- Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 65060640 bytes (62 MB) / 94109696 bytes (89 MB) up to 829554688 bytes (791 MB)
- JVM Flags: 0 total;
- AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- LWJGL: 2.4.2
- OpenGL: ~ERROR~ NullPointerException: null
- Is Modded: Probably not
- Type: Client
- Texture Pack: ~ERROR~ NullPointerException: null
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: ~ERROR~ NullPointerException: null[failed to get system properties (java.lang.NullPointerException)]


org.lwjgl.LWJGLException: X Error - disp: 0x7f4db80cd220 serial: 36 error: BadRequest (invalid request code or no such operation) request_code: 156 minor_code: 14
at org.lwjgl.opengl.LinuxDisplay.globalErrorHandler(LinuxDisplay.java:268)
at org.lwjgl.opengl.LinuxDisplayPeerInfo.initDefaultPeerInfo(Native Method)
at org.lwjgl.opengl.LinuxDisplayPeerInfo.<init>(LinuxDisplayPeerInfo.java:52)
at org.lwjgl.opengl.LinuxDisplay.createPeerInfo(LinuxDisplay.java:684)
at org.lwjgl.opengl.Display.create(Display.java:854)
at org.lwjgl.opengl.Display.create(Display.java:784)
at org.lwjgl.opengl.Display.create(Display.java:765)
at net.minecraft.client.Minecraft.a(SourceFile:232)
at net.minecraft.client.Minecraft.run(SourceFile:515)
at java.lang.Thread.run(Thread.java:722)
--- END ERROR REPORT 49010fc7 ----------

Can we have more informations? because for me "Suddently stopped" is just a normal crash.