this is displayed in the development console:

PA fatal error has been detected by the Java Runtime Environment:
[21:46:25 INFO]: Client> #
[21:46:25 INFO]: Client> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x051d3e88, pid=5296, tid=2836
[21:46:25 INFO]: Client> #
[21:46:25 INFO]: Client> # JRE version: Java(TM) SE Runtime Environment (7.0_51-b13) (build 1.7.0_51-b13)
[21:46:25 INFO]: Client> # Java VM: Java HotSpot(TM) Client VM (24.51-b03 mixed mode, sharing windows-x86 )
[21:46:25 INFO]: Client> # Problematic frame:
[21:46:25 INFO]: Client> # C [ig4dev32.dll+0x3e88]
[21:46:25 INFO]: Client> #
[21:46:25 INFO]: Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
[21:46:25 INFO]: Client> #
[21:46:25 INFO]: Client> # An error report file with more information is saved as:
[21:46:25 INFO]: Client> # C:\Users\Benedikt\AppData\Roaming\.minecraft\hs_err_pid5296.log
[21:46:25 INFO]: Client> #
[21:46:25 INFO]: Client> # If you would like to submit a bug report, please visit:
[21:46:25 INFO]: Client> # http://bugreport.sun.com/bugreport/crash.jsp
[21:46:25 INFO]: Client> # The crash happened outside the Java Virtual Machine in native code.
[21:46:25 INFO]: Client> # See problematic frame for where to report the bug.
[21:46:25 INFO]: Client> #