These are lovely laptops but very picky about memory :

Of the three chips i have tried so far only one works ,

256MB ibm pc100 - won't even boot (but might be dodgy chip)
128mb micron pc133 - works great
256mb compaq pc133 - boots but errors in memtest86 and os wont start

all are CL3 , has anyone tried CL2 chips ?

can anyone recommend a specific 256 SODIMM that works ?