As James has pointed out to me, there were some problems with performance in the last few weeks. I kept having to restart the server because the processor and RAM were being eaten alive, and I couldn't figure out why. I've installed a new version of PHP now, and it seems to have fixed it, but I'm not sure. So if you have problems with the site running slow, or just stopping altogether, I'd appreciate it if you'd let me know.
Seems to be rocketing along now, but let's hope it lasts!
adam
