R on Mac 10.6 freezing

I am running R and R64 on a MacBook Pro (2.66GHz, 8GB, OS X 10.6)  
andit keeps freezing up on me (i.e. have to force quit or kill).   
Sameproblem with both R and R64.  I am not doing heavy computation,  
mostlyjust editing some scripts in the GUI.  Also the computer is  
plenty fastwith sufficient memory.  I looked around but haven't seen  
anything onthis problem.  Have also tried reinstalling R.

Things you might try:

1) delete your .RData file
2) delete your .Rhistory file  # both of these are hidden by default  
so you need to either do it from a Terminal session or change the  
defaults for display of system files in Finder
3) repair permissions (probably the easiest way is with Disk  
Utility.app)

In the past I have had problems with R freezing up when I attempted to  
access external links to pdf files from the help window when using the  
GUI, but I have not been able to reproduce that behavior consistently.  
If you can notice what you are doing just before the freeze, that  
might be helpful.

David Winsemius, MD
West Hartford, CT