I've been getting low memory messages frequently, and the system would automatically increase the paging file. Being a technoloser, about the only thing I knew to do was reboot more frequently.
If I had Firefox running, plus Outlook Express and Windows Media Player, I'd last about 3 hours before getting the low memory message.
Following the directions in a recent "Firefox Suck!" thread, I went out and bought a 256 K RAM stick. I installed it, booted up, and lasted about 5 minutes before Firefox failed and then the computer spontaneously rebooted. This computer has had overheating problems from day 1, but I have been able to keep it under control using a small fan. I had never seen it get so unstable so fast before, though.
I took it apart and pulled the new RAM stick and it is functioning properly now.
What now?