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Weird performance issues, iPC 10.5.6 on AMD SSE3 using AnV 9.6.0 kernel


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I'm experiencing some rather bizarre performance issues with my setup. If I allow the system to boot normally, then performance is terrible across the board -- switching between applications takes forever, nothing behaves responsively, buttons don't respond to mouse clicks for several seconds, that sort of thing. If I boot with -v -f, though, everything's fine.

 

I used System Profiler to compare the list of extensions that are loaded in either case; the lists are identical.

 

There are some other issues, but I don't know if any of these might be related:

 

- About This Mac crashes.

- System Profiler displays an error when I click Memory under Hardware (probably the same issue).

- I don't have any seatbelt.kext installed (removed it after I saw the first DMG crash), but DMGs work fine anyway.

 

I initially set up the system to use the Voodoo 9.5.0 kernel, but replaced it with Andy's 9.6.0 kernel in a vain attempt to get break points working in Xcode.

 

I have not run the Apple Software Update utility.

 

I would greatly appreciate it if anyone could help me figure out what's going on here.

Here's the list of extensions from System Profiler:

 

post-102555-1235369997_thumb.png

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