[curt.clifton]

Mary,

I'm running the same setup that you are and sticky notifications are working for me. Attached are a couple of screenshots of my Growl settings. I think this problem has to be on the Growl side. OF just throws all the notifications at Growl and it decides what to do with them.

Hopefully you'll see something in these screenshots that helps, though it sounds like you've tried everything. You might also try asking over at growl.info.