Archived from groups: alt.comp.periphs.mainboard.shuttle (More info?)

So i've had my SK41G for a while and it's great.

stats:
Shuttle SK41G (FX41 Mainboard)
Athlon XP 2200+
GeForce4 ti4200 128MB
WD2000JB HDD as Master on Channel 1
Teac 4x DVD-R drive as Master on Channel 2
USB - Keyboard, Mouse, 802.11g dongle, printer... etc.

So i originally ordered the machine with 512 MB DDR 266 ram, and i
decided recently that i wanted more. I was under the impression that
this mainboard did not require matching DIMMs. So i ordered a stick of
PC2100 mem from newegg.

The system booted with 1 GB but it would hang regularly (often due to
bittorrent) and started getting blue screens of death. I took out the
new RAM and i was still getting some crashes!
then i took out the old ram and it was working ok. I have read that
bittorrent is very sensitive to bad memory.

I noticed on the new RAM (Viking) that it said pc2100 compliant but it
also said DDR 333 (On the sticker and also as reported by LavaSys).
Now, DDR 333 is PC2700... so already i was suspicious. SO i tried
ordering a second stick of PC2700... and the system seemed to be
running fine.

Here is the wierdest part.... i was using bitcomet and playing
iTunes... so I've got Zep blasting through the house.... a 1/2 hour
later i go to check mail... and the light on my optical USB mouse is
OUT. but the music is still playing! so it was as if some bug cut off
the USB bus without crashing the machine.

any ideas? i've taken out the PC2700 stick and i'm running on my 512
again... do i need matching DIMMS? is there some bios setting that
could help or hurt me?

Thanks,
Jeff