Repeated Freezing When Left Idle.

Since updating my PowerMac G5 to Leopard back when it came out, I've had a serious problem where everything will freeze up when left idle. My machine is configured to just shut the display off after 10 minutes of inactivity and I leave it on constantly. Each time the machine is left alone for several hours I move the mouse or hit a key to turn the display back on nothing happens. This was never a problem with 10.3 or 10.4 and started the day I installed 10.5. I can still ping the machine from other locations on my network but I cannot get any other type of network connectivity. The only way to bring it back to life is to hard power it down.
I have been checking the logs to see if there is anything in there that can be an indication of what's going on and I constantly see errors relating to the USB subsystem. They look similar to this...
USBF: xxx.xxx OHCI driver:
OHCIRootHubResetResetChange bit not sticking.
Retrying.
I've unplugged all of my USB devices to see if anything would change but it does nothing. The one thing I can't modify are the USB ports on my display. I have an older 17" display with an ADC connection. The ports on that display have been acting up for years and I do not use them but I have no means to disconnect them as it all flows over the ADC connection.
I'm running out of ideas on how to troubleshoot this.
Thanks,
Jeff.

Did you get tis fixed? I have an imac G5 that is doing the same thing.

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Message was edited by: aphextw

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Macbook pro freezes when left unattended

amateur grandma here
when I leave my Macbook pro alone, goes to sleep, blank screen, will not activate unless I shut off and restart. Leaves me message when I boot up below.
Tue Jul 22 08:20:43 2008
panic(cpu 1 caller 0x004045DB): "TeslaSurface: attached at free()"@/SourceCache/xnu/xnu-1228.5.20/iokit/Kernel/IOLib.cpp:724
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x41cbbb28 : 0x12b0fa (0x4592a4 0x41cbbb5c 0x133243 0x0)
0x41cbbb78 : 0x4045db (0x49b794 0x41cbbbb0 0x41cbbba8 0x27fca000)
0x41cbbb98 : 0x40ab74 (0x41cbbbb0 0x49bdbc 0x3c 0x404dc1)
0x41cbbc28 : 0x3eb79c (0x27fca000 0x0 0x1 0x40cb29)
0x41cbbc48 : 0x3eb869 (0x27fca000 0x0 0x40d8c90 0x27fca000)
0x41cbbc68 : 0xf317c2 (0x27fca000 0x240d0000 0x40d8c90 0x8176790)
0x41cbbc98 : 0x40fc65 (0x240d0000 0x4128410 0x4128410 0x0)
0x41cbbce8 : 0x43afc3 (0x240d0000 0x4128410 0x4128410 0x0)
0x41cbbd48 : 0x18d18b (0x240d0000 0x4128410 0x0 0x0)
0x41cbbdb8 : 0x12d17e (0x8176778 0xbea6890 0x41cbbdf8 0x11ee14)
0x41cbbdf8 : 0x126257 (0x8176700 0x40d49e0 0x1ace780 0x0)
0x41cbbf08 : 0x1973dd (0x41cbbf44 0x0 0x0 0x0)
0x41cbbfc8 : 0x19f3b3 (0x4c1c120 0x0 0x1a20b5 0x41383c8)
No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xbfffdca8
Kernel loadable modules in backtrace (with dependencies):
com.apple.GeForce(5.2.8)@0xf1d000->0xfabfff
dependency: com.apple.NVDAResman(5.2.8)@0xae9000
dependency: com.apple.iokit.IONDRVSupport(1.5.2)@0xadb000
dependency: com.apple.iokit.IOPCIFamily(2.4.1)@0x5c1000
dependency: com.apple.iokit.IOGraphicsFamily(1.5.2)@0x7cb000
BSD process name corresponding to current thread: ScreenSaverEngin
Mac OS version:
9E17
Kernel version:
Darwin Kernel Version 9.4.0: Mon Jun 9 19:30:53 PDT 2008; root:xnu-1228.5.20~1/RELEASE_I386
System model name: MacBookPro3,1 (Mac-F4238BC8)

Happy Birthday, young grandma
It may just be the particular screensaver you are using - try another. Is it one of the defaults or one you downloaded or created?
Also, you might creating a fresh user to test.
Create a new account, name it "test" and see how your problem screensaver works in that User acct? (That will tell if your problem is systemwide or limited to your User acct.) This account is just for test, do nothing further with it.
Open System Preferences >> Accounts >> "+" make it an admin account.
If the problem is present in the test account also, then it is systemwide. In this case try repairing this with the 10.5.4 Combo Update . This is a fuller install, as opposed to an incremental "delta" update so it should overwrite any files that are damaged or missing. It does not matter if you have applied it before.
Remember to Verify Disk before update and repair permissions after update from /Applications/Utilities/Disk Utility.
Until it's sorted, you can use Screen Sleep in Energy Saver.
-mj

Repeated Freezing When Left Idle.

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