iTunes/Quicktime crashing issue w/ 4870 & 10.5.7

[thepawn]

I'm using Bose USB speakers, but I'll compare driver info when I get home from the office.

 

[aibo]

I'm not using any USB audio devices -- just the 3.5mm jack. Everything was fine until I went from GeForce 8800 to 4870.

 

[thepawn]

Well I tried letting the screen saver come on and then the monitor went to sleep while iTunes had focus and was on screen... it didn't crash upon waking the monitor. Also tried setting the sleep to 1 minute (before the screen saver came on) and again it didn't crash. I just can't get my iTunes to crash.

What on earth could be different about my system? What sound output driver are you guys using? Perhaps it has something to do with the combo of video and audio drivers being used? I'm using a USB interface (Lexicon) connected to one of the USB ports on the back of the Mac Pro.

FWIW, this is all I could find in the system info about anything related to an ATI driver... if you want any other info from my system, let me know.

Other then the load address and install time, we've got the same driver info:

ATIRadeonX2000:

Version: 1.5.48
Last Modified: 2/5/09 12:57 AM
Get Info String: ATIRadeonX2000 1.5.48.6 (6967)
Location: /System/Library/Extensions/ATIRadeonX2000.kext
kext Version: 5.4.8
Load Address: 0x859a0000
Valid: Yes
Authentic: Yes
Dependencies: Satisfied
Integrity: Kext has no receipt