I was just wondering if anyone had experienced severe slow-downs while running FC5... For instance I have a USB 2.0 Firelite 60 Gig HD device that I am deleting files off of right now and an operation that would have taken about 3 seconds in WinXP is taking about 10 minutes to delete some large directories. And last night I was copying files from one IDE HD to another and it took multiple hours to copy less than 30 GB... This would have taken about 10 minutes in WinXP... Also while I was copying another set of files from the USB 2.0 drive to the IDE Drive the system was incredibly slow, not loading firefox, and running slow in multiple terminal windows that I had open. Does anyone have a suggestion? This seems absolutely ridiculous. As you will see from my signature my system is new and pretty powerful. I guess I am complaining mostly about the data throughput to devices more than the load time of programs but when I am copying files and such nothing really loads... As I finish writing this FC5 is still deleting files off of the Firelite drive...

Anyone else have these problems? Any suggestions?

You got an amd processor. The release notes for FC5 state that it is optimized for Pentium 4 processors. Try recompiling your kernel to see if it helps.

but I have the FC5 x86_64 version? Shouldn't that be optimized for AMD Athlon 64 processors?

Oh sorry. Didn't know that was an x86_64 type processor. Yeah, it shouldn't matter. I would check the kernel config anyways to make sure it loads the right modules for your processor.

Sounds like DMA. I posted in your other thread but ignore it if you're already using the x86_64 version. Use 'su -' to get root in a terminal and run this to see if DMA is enabled.
That's presuming you're using SATA disks, if you're running IDE then it's hda.