Thanks to both of the respondents. I have used Onyx to delete the trash from all connected volumes. The trashes are fully fully emptying--no doubt about it. But, after it is emptied, and looks empty (ie. there is nothing in the trashcan and if I open it, there is nothing there at all even with "show everything" toggled. However, as soon as I throw one single thing in the trash, and look (and see only 1 thing), and say empty it, it tells me it is deleting 10 things.
I very much fear that this has something to do with fonts. I think I mucked something up when I installed FontExplorer and I do think that the system keeps "recovering" font files or something like that. I have no evidence for this, other than a sinking feeling.
I could reinstall Snow Leopard and try all over again but even with Time Machine I am afraid that at some point when I am restoring stuff, I will restore the stupid files that keep showing up in the trash. Kinda like cats with nine lives. Yes, the cat came back.
I tried the terminal thing but it was a non starter. Would not let me copy and when I wrote it out, it kept saying it was illegal. Finally got it to work but then it said rm was an illegal option. Sigh. Think I should go back to ignoring this. Every few months or so I get determined to fix it and then I get tired of it.