The attached file was created with Blender >2.57RC2. (~3 days ago).

In today's SVN (36103) it explodes Blender.
This file is simply the default Blender file + my ui arrangement for my 2 monitors (the file has 3 open blender windows)

Windows 7 64 bits (Blender 32). scons build. NVidia 8800

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Traceback:
blender.exe!strstr(unsigned char * str1=0x52128670, unsigned char * str2=0x005deacc) Line 78 Asm
blender.exe!GHOST_WindowWin32::installDrawingContext(GHOST_TDrawingContextType type=GHOST_kDrawingContextTypeOpenGL) Line 769 + 0xe bytes C++
> blender.exe!GHOST_Window::setDrawingContextType(GHOST_TDrawingContextType type=GHOST_kDrawingContextTypeOpenGL) Line 89 + 0x16 bytes C++
blender.exe!GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 * system=0x0101a978, const STR_String & title={...}, int left=2, int top=0, unsigned int width=1918, unsigned int height=1160, GHOST_TWindowState state=GHOST_kWindowStateNormal, GHOST_TDrawingContextType type=GHOST_kDrawingContextTypeOpenGL, const bool stereoVisual=false, const unsigned short numOfAASamples=0, GHOST_TSuccess msEnabled=GHOST_kFailure, int msPixelFormat=0) Line 282 + 0xc bytes C++
blender.exe!GHOST_SystemWin32::createWindow(const STR_String & title={...}, int left=2, int top=0, unsigned int width=1902, unsigned int height=1122, GHOST_TWindowState state=GHOST_kWindowStateNormal, GHOST_TDrawingContextType type=GHOST_kDrawingContextTypeOpenGL, bool stereoVisual=false, const unsigned short numOfAASamples=0, const long parentWindow=0) Line 234 + 0x5c bytes C++
blender.exe!GHOST_CreateWindow(GHOST_SystemHandle__ * systemhandle=0x0101a978, const char * title=0x022d3348, int left=2, int top=0, unsigned int width=1902, unsigned int height=1122, GHOST_TWindowState state=GHOST_kWindowStateNormal, GHOST_TDrawingContextType type=GHOST_kDrawingContextTypeOpenGL, const int stereoVisual=0, const unsigned short numOfAASamples=0) Line 156 + 0x49 bytes C++
blender.exe!wm_window_add_ghostwindow(bContext * C=0x010f7788, const unsigned char * title=0x022d3348, wmWindow * win=0x052f4c08) Line 332 + 0x35 bytes C
blender.exe!wm_window_add_ghostwindows(bContext * C=0x010f7788, wmWindowManager * wm=0x057d7960) Line 404 + 0x12 bytes C
blender.exe!WM_check(bContext * C=0x010f7788) Line 239 + 0xd bytes C
blender.exe!WM_read_file(bContext * C=0x010f7788, const unsigned char * name=0x005df630, ReportList * reports=0x051d1ce8) Line 313 + 0x9 bytes C
blender.exe!wm_open_mainfile_exec(bContext * C=0x010f7788, wmOperator * op=0x052bf9b0) Line 1482 + 0x17 bytes C
blender.exe!wm_handler_fileselect_call(bContext * C=0x010f7788, ListBase * handlers=0x05265a94, wmEventHandler * handler=0x059c2230, wmEvent * event=0x059c2190) Line 1350 + 0x1b bytes C
blender.exe!wm_handlers_do(bContext * C=0x010f7788, wmEvent * event=0x059c2190, ListBase * handlers=0x05265a94) Line 1488 + 0x15 bytes C
blender.exe!wm_event_do_handlers(bContext * C=0x010f7788) Line 1765 + 0x14 bytes C
blender.exe!WM_main(bContext * C=0x010f7788) Line 347 + 0x9 bytes C
blender.exe!main(int argc=1, const unsigned char * * argv=0x010f1e50) Line 1305 + 0x9 bytes C
blender.exe!__tmainCRTStartup() Line 266 + 0x19 bytes C
blender.exe!mainCRTStartup() Line 182 C
kernel32.dll!75233677()
[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]
ntdll.dll!774d9d72()
ntdll.dll!774d9d45()