The system only sees 128 MB on startup, and Windows only sees 128 MB. I also ran a memory diagnostics and it only sees 128MB. But there are 2 x 128 MB there.
They were seeing 256 MB for the past two years, and suddenly it only sees half of what's actually there, whatever I do (i.e. I take one 128MB chip out, and it sees 64 MB).
Anyone else with clues?