I have an old, old Compaq N600c that recently came into my possession that I am doing a budget refurb on. New battery $25, G cardbus card $9, Ubuntu 10.04 free, etc. 256 MB ram for ~$22 to go with the existing 256MB stick and now we have a problem. HP clearly states that it can support up to 512 MB SDR so-dimms (if and when they become available! Such huge amounts of ram!) When I put in the stick and have the "fast boot" enabled it identifies the 256MB stick as 256MB, then promptly reboots. If I let it run through the old-school memory check on boot (you remember this!) which takes about 30 seconds, it will get to ~131MB and beep and say there is a memory mismatch, but the PC will then boot and work just fine. It does this in either slot, with or without the second stick present. I think this is a 128 MB stick (didn't that show up as ~131MB system memory???) that is intentionally mislabeled/misprogramed to post as a 256MB stick. Does that actually happen though? I'd like to know before I get after the Amazon seller. Thanks in advance!