Can you track down what exactly are you doing, when IDE closes?

sometimes when trying to compile a project sometimes when saving or sometimes 
when calling the auto complete function but most of the time not because that 
crashes netbeans when you type the brackets at the end so i turned it off but 
other times just when typing in anything from variable names to comments or 
even when nothing at all is happening and netbeans is just sitting in the 
background minimized maximized active window non active window
i don't see a pattern in when or why it is closing

Can you inspect your message log? Is there any error related to this problem?
Can you attach your message log after the problem occured.
("<userdir>/user\var\log\messages.log") Thanks.

additional information has not been provided, so close this issue