Leopard USB and Firewire Ports

With leopard 10.5.1 loaded, I frequently get the grey screen of death (kernal panic) if I have a USB device plugged in (other than the mouse and keyboard). I have Pantones's Huey (Screen calibrator) attached to the USB on my keyboard. After reading many forum issues about USB devices jamming up Leopard, I decided to unplug the Huey sensor... no more problems! Also I have a 500 GB WD My Book Studio external HD plugged in the back Firewire 800 Port, it works well. Plug a Digital Camcorder in the front Firewire port.. not only does my camcorder not mount, but my machine spits out the external HD and gives me an error message about improper device removal. Please release 10.5.2 and include fixes for these external device issues!
PS on a Tiger OS I have had zero conflict with these periferals

When I first installed Leopard I got an "install media is corrupt" message about the Leopard Install disk right from the start. My first thought was the hard drive. So I purchased and overnighted an new 500 GB internal hard drive to back up the main hard drive. I erased and reformatted my main hard drive to install Leopard on. Same problem. I tried to install on the new 500 GB HD no luck. I also installed 2 GB dimms at the time. Turns out the dimms weren't agreeing with leopard. I returned the dimms for new only to have the same "corrupt media" message. Crucial explained that the memory should be largest dimms toward the processor (slots 1 & 2) and so on. I put all my memory back the way it was and everything seemed normal. I installed Leopard successfully. I started to get frequent Kernal Panics with everyday use (I do graphic design). I checked the forums and kept reading about problems associated with USB and this or that program. I unplugged my Huey (used for screen color correction) and Wha-lah. No more Kernal Panics.
But, now my digital camera and my Dazzle 6in1 media reader do not mount and/or hang up my machine with a kernal panics. When I tried to boot from and use Leopards disk utility I got the "media corrupt" message again.
I just hope 10.5.2 addresses the Leopard to hardware/USB/Firewire issues.

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