Please describe the crash in more detail, the word "crash" can mean different things to different people. If you mean the computer shuts down then I would recommend checking to see how much available HD space the computer has. Mac's need 10-15% of the total HD available to really operate well. To check the available space in Finder locate the HD on the left pane then right click it and select "Get Info." If you find you are extremely low on HD space then you will need to offload some data to an external HD. The things that tend to take a lot of disk space is media including music, movies and photos.
Thanks for your input!
I've got over 600GB available on my HD, and 4GB, 800 MHz DDR2, SDRAM
Rather than "crash" the program "unexpectedly quit" at open of the Save or Save As window in multiple programs. After running through the usual Disk Utility, cache clean up, deleting unnecessary fonts, and booting into Safe Mode, I finally located the answer in this post:
However, after moving all my folders/files from the desktop to the HD, now when opening the HD or folder, the system hesitates to open them and sometimes finally opens the window or does not open it at all then closes all windows that were already open. I then have to double click the HD again and it opens fine. I tried it in new user account and in "root" with the same behavior.
Any suggestions welcome!