In 1.6.2, if you minimize the Minecraft window on the menu screen it'll cause a Memory Access Violation crash.. Report goes like so:
Client> #
Client> # A fatal error has been detected by the Java Runtime Environment:
Client> #
Client> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000007fee3c6164e, pid=18636, tid=18648
Client> #
Client> # JRE version: Java(TM) SE Runtime Environment (7.0_40-b29) (build 1.7.0_40-ea-b29)
Client> # Java VM: Java HotSpot(TM) 64-Bit Server VM (24.0-b48 mixed mode windows-amd64 compressed oops)
Client> # Problematic frame:
Client> # C [ig4icd64.dll+0x1164e]
Client> #
Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
Client> #
Client> # An error report file with more information is saved as:
Client> # C:\Users\Gabriel\AppData\Roaming\.minecraft\hs_err_pid18636.log
Client> #
Client> # If you would like to submit a bug report, please visit:
Client> # http://bugreport.sun.com/bugreport/crash.jsp
Client> # The crash happened outside the Java Virtual Machine in native code.
Client> # See problematic frame for where to report the bug.
Client> #
Client> AL lib: (EE) alc_cleanup: 1 device not closed