I found the following info on redirects as viewed by Google:
http://www.google.com/support/bin/se....Search=Search
Apparently they also recommend using a "301 redirect", (although I still don't know what my site uses for redirects).
I could not find any info on "302" redirects there, but it does mention something about if you do the redirect wrong it removes both URLs from their index for 180 days... Perhaps this is the "banning" I read about elsewhere.