Thanks Tammy, it looks like the filter error bug has been fixed. Vinod also seems to have figured out that the (incorrect) use of ns_eval
was causing the problem with the site node map. I don't know what his solution will be, but he will probably substitute an nsv array for the bad code.
I think the nsv bug is still open, this should be a high priority to fix.
It is very helpful to report these bugs. OpenACS has a huge code base and it serves as a great test of AOLserver code.