Hi Fernando,
Crash logs may be found at:
/Users/{your user name}/Library/Logs/CrashReporter/
I believe in Lion OS X hides the Library folder, so you would need to the "Go" --> "Go to Folder..." command from the finder.
You can enter:
~/Library/Logs/CrashReporter/
And it will automatically take you to your home library.
HOWEVER, it doesn't sound like you will have crash logs, because what you're describing is a hang.
You can write to sup...@figure53.com with the details of your setup and we can do our best to help track down whatever is happening.
Best,
Chris
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