Just to make it easy to read the previous posts to BEE-L, here is a direct link
to the BEE-L imidacloprid discussions to date:

http://listserv.albany.edu:8080/cgi-bin/wa?S2=bee-l&q=imidacloprid&s=&f=&a=&b=

Hope it does not wrap.  If it does, try the link on

http://www.internode.net/HoneyBee/Imidacloprid/letters1.html

This latter link also has the French discussions and a translator.

allen