@farcaller, thanks for the info. i never knew about that.

@Ian, i did three different bench tests after changing the memory timings (xBench, OpenMark, and OpenGLev). everything seems normal. again, i never had any OC settings in my BIOS, so for me, changing the memory timings doesn't seem to have caused any drawbacks so far. all in all, system performance seems the same, so really it's just a matter of long-term testing to see if the slowdowns come back. as i said, i'll keep this thread updated after i've left my computer on for 24+ hours. in the meantime, i will be going back to all of the posts on this forum where this subject has been discussed, and i'll try to rally everyone to this post. we'll make it a somewhat "official" post for this bug and see if we can all try to work together on figuring it out. maybe we can even get enough attention from Zeph so that he might look to the internal workings of leopard for some solutions.