Crashes with error EXC_BAD_ACCESS (SIGBUS)

Hi All,

I recently bought a new 27 inch iMac and I'm having a lot of EXC_BAD_ACCESS (SIGBUS) crashes when I open programs like Safari for example. Somethimes it crashes right at the start when I click to open a program and somethime it takes a few minutes but It will crash.
The same goes for Cubase and Native Instruments Complete applications. These appications are all I want use really because I bought the iMac to make music.
I copied the the error it crashes with, there is a whole lot of text but this is probably the most importen piece.

*******************************************
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000010
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
********************************************

I googled the error code and came across some articles. So far I tried this steps:

- Run an extended harware diagnostics check from the application DVD.
On some forums people had a similiar problem and I turned out to be bad memory. Mu test turned out to be ok.

- Boot into save mode and used the disck util program to fix permissions on my HD. I first runned a check and it came up with some permissions that apparently were not right. I used the option to reset the permissions but the problem continued after a reboot.

- Tried to run the latest Combo fix as suggested on soem forums. Im running 10.6.7 and the Combo update was also version 10.6.7.
I could not install it. At the screen where you select on what disk you want to install there was a yellow exclamation mark at my HD. I dont know why because There is over 800GB free space.

- I cleared the library cache folders as suggested on some forums

- I turned of sharing and removed my shared folders as suggested on a forum.
I dont know if it has anything to do with it but it seemed to fix it for the guy who was having the same issue.

The last thing I can think of myself is reinstall the system but since it is verry time consuming to install all the NI sound libraries I want to know if there is something else I can try.
I dont know if the problem was there from the start because I started installing my applications right after I got the imac. During the installation I had no problems.

Hope someone can help.
I have verry little Mac / OSX knowledge myself. before I bought the imac I had a MBP for a few months that was using flawlessly with the same software.
Hope I wont regrat it after all

 

Thanks for your reply.
I did run a hardware test using the disk wich is included.
Test showed no problems.