Ok , after finding 40 000 errors with memtest at about 51 % progress I
decided to buy a new module.

Allodoxaphobia wrote:

(I spent FAR too much time trying to get around the problem with the
kernel option ala: badram=0x1c23f5cc,0xfffffffc. The documentation on
that option is WRETCHED, and to this day I firmly believe the optionis
totally bogus. Don't go there.)

I don't find it at all in the kernel parameter list of 2.6.21-gentoo-r4.
Maybe you are right, the parameter is bogus.

--
Regards,

Gregory.
Gentoo Linux - Penguin Power

My experiance excactely,
sometimes its better just to give up and spent some mony on good hardware.