That usually indicates a fault in the OS somewhere. Since no one gives a shit about OpenCL on OSX (not even Apple), I'm not sure what to tell you. Any other OSX users want to chime in?

Thats a 5750, actually. 5750s do about 116 mhash/sec and are Junipers.

Update: Added dedicated getwork thread, now only gets new work once per 5 seconds instead of 3 times per gpu per 5 seconds.

This should improve performance on miner pools due to remote connection latency, and it should also improve performance on setups that have many miners connecting to a single LAN bitcoind.

Another update: Added -g/--getwork to change the number of seconds between getwork refresh, should help high pool latency issues, default remains 5.

Another another update: the sh scripts now set an environment variable that fixes SDK 2.2 and 2.3 CPU time usage. I still recommend 2.1, but at least it doesn't go apeshit anymore.

You didn't have to rename the libs. Setting DISPLAY alone fixes this (as long as you have an X server running).

Does anybody have a comparison on how Linux against Windows machines are performing when running the GPU miners?

Great news
I was already dreading I'd have to setup a Windows machine ^^

The ELFCLASS32 bug is, unfortunately, inside the AWT code inside Java. lwjgl rams into it because it initializes AWT even if I do not open a window. They are aware of the bug; Oracle has no plans on fixing it on their end (ANY app that tries to init AWT on a system without X running will do this).

Throwing up a dummy xvfb will indeed fix this. ATI users don't have this problem because X has to be running to use OpenCL

I have tried DiabloMiner on MacOS X but I have some errors when DiabloMiner is creating the command queue:

[12/25/10 5:18:52 PM] Started
[12/25/10 5:18:52 PM] Added GeForce 9400M (#1) (2 CU, local work size of 256)
[12/25/10 5:18:54 PM] Added GeForce 9600M GT (#2) (4 CU, local work size of 256)
[12/25/10 5:18:54 PM] ERROR: [CL_DEVICE_NOT_AVAILABLE] : OpenCL Error : clCreateCommandQueue failed: Device 0x1020331f0 is not available.
[12/25/10 5:18:54 PM] ERROR: Failed to allocate queue
[12/25/10 5:18:54 PM] ERROR: [CL_INVALID_COMMAND_QUEUE] : OpenCL Error : clEnqueueWriteBuffer failed: invalid command queue 0x0.
Exception in thread "DiabloMiner Executor (GeForce 9600M GT (#2)/0)" java.lang.NullPointerException
        at org.lwjgl.opencl.APIUtil.releaseObjects(APIUtil.java:506)
        at org.lwjgl.opencl.APIUtil.releaseObjects(APIUtil.java:502)
        at org.lwjgl.opencl.CL10.clReleaseCommandQueue(CL10.java:565)
        at com.diablominer.DiabloMiner.DiabloMiner$DeviceState$ExecutionState.run(DiabloMiner.java:568)
        at java.lang.Thread.run(Thread.java:680)

I opened a ticket at github with more information  : https://github.com/Diablo-D3/DiabloMiner/issues#issue/3

Thank you for your work,

BTW, the java is using 100% CPU in my computer, not 0% as advertised. I want my money back!

I'm using the last version. Do you want me to test anything?