This is a warning. I had severe problems when running linux (kernel 2.2.3) with more than 64 MB RAM. Both 64 MB SDRAM DIMM's caused the system to hang when a shutdown was started (subsequently damaging the file system) and caused many messages like
p -> mh_magig4 == 0x55555555 Stopping myself ... I was also impossible to install Linux with both DIMM modules installed. I spend a lot of time to install Debian and Suse before discovering that I have to remove one DIMM. After exchanging my motherboard with a ASUS PsB 100 BX ATX the problems disappeared. I used a so called Tomato motherboard with a Intel BX chip, ATX, BIOS 1.02. I will nevermore buy cheap and unknown motherboards. Werner