Generate dxdiag logs and post them so we can at least get a summary of your specs, and attempt to identify the source of the problem.
1. Start -> Search: dxdiag
2. Click "Save All Information"
Do you get the same issue using OpenGL? There's a checkbox in F3 to toggle between DirectX and OpenGL now.
Also you could generate HiJackThis logs as well.
Link:
http://www.trendmicro.com/ftp/produc...HijackThis.exe
1. Download
2. Run -> Do a System Scan and Save Log file
Video card drivers up-to-date?
Do you have Aero enabled? Try disabling it and see if you encounter the same issue.
http://www.howtogeek.com/howto/windo...windows-vista/
Graal does a lot of File I/O. An anti-virus's active shield could be hooking the loading processes and running every time Graal attempts to load a file. Try disabling your anti-virus. If it helps try adding the Graal.exe and/or directory to the 'Excluded' items option in your anti-virus.
While Graal is running check the processes tab in task manager (ctrl+alt+del), sort by CPU and see what percentage is being consumed and by what.